Changes from version 0.16-pre1 to 0.16
--------------------------------------

* Exiv2 utility
	- 0000484: [tools] exiv2 -T adjusts file timestamp wrongly.
	           (Reported by Dave Locke)
	- 0000477: [tools] Adjust year, month and day of the timestamp.
	           (Based on a patch by David Grundberg)
	-          [tools] Modified fixiso action to handle Canon tags as well.

* Exiv2 library
	- 0000537: [miscellaneous] Broken PNG image causes exiv2 to crash.
	           (digiKam bug 155105, reported by Michal Kosmulski)
	- 0000534: [exif] Integer overflow when reading thumbnail.
	           (Reported by Meder Kydyraliev, Google Security Team)
	- 0000533: [iptc] Read IPTC data from multiple APP13 Photoshop 3.0 segments.
	- 0000531: [exif] Pentax lens info decoding. (Patch by Michal Cihar)
	         - [exif] Updated Nikon lens info to v2.99 of Robert Rottmerhusen's
	           lens database.
	         - [doc] Added reference tables for XMP properties to documentation.
	         - [miscellaneous] Updated German translation.
	           (Oliver Dörr)
	         - [miscellaneous] Updated Polish translation.
	           (Piotr Eljasiak)

* MSVC related
	- 0000535: [build environment] unlink() declaration conflicts with Visual
	           Studio stdio.h. (Reported with patch by Nikolai Saoukh)
	- 0000514: [miscellaneous] Linking with libexiv2 masks system localtime,
	           and on MinGW, that of libexiv2 doesn't handle DST correctly.
	         - [build environment] Fixed compilation of the samples.
	         - [build environment] Added support for XMP to MSVC project files.


Changes from version 0.15 to 0.16-pre1
--------------------------------------

* Exiv2 utility
	- 0000463: [design] Add support for XMP metadata.

* Exiv2 library
	- 0000529: [exif] Add support for Pentax maker note. (Michal Cihar)
	- 0000522: [exif] Lightzone-created JPEG causes exiv2 to segfault.
	           (Reported by Markus Spring)
	- 0000463: [design] Add support for XMP metadata.
	         - [exif] Support for Olympus ORF format. (Jeff Costlow)
	         - [exif] Updated Nikon lens info to v2.40 of Robert Rottmerhusen's
	           lens database.
	         - [exif] Added Minolta lenses. (Hiroshi Kawashima)
	         - [exif] Ported various Exif tags from Exiftool.
	           (Gilles Caulier)
	         - [miscellaneous] Added i18n for XMP properties, XMP support
	           in PNG images. (Gilles Caulier)
	         - [build environment] Isolated sample programs in their own
	           directory.
	         - [miscellaneous] Updated French translation.
	           (Olivier Tilloy)
	         - [miscellaneous] Updated German translation.
	           (Oliver Dörr)
	         - [miscellaneous] Updated Polish translation.
	           (Piotr Eljasiak)
	         - [miscellaneous] Updated Russian translation.
	           (Alexandre Prokoudine)


Changes from version 0.14 to 0.15
---------------------------------

* Exiv2 utility
	- 0000518: Return code 0 when unable to insert exif tags.
	           (Reported by Daniel J Blueman)
	         - Rename action: Use Exif.Image.DateTime if 
	           Exif.Photo.DateTimeOriginal is not present. (Highlighted by 
	           mflanagan_swim)

* Exiv2 library
	- 0000521: [exif] Image with large invalid Exif tag crashes exiv2.
	           (Reported by Marco Piovanelli)
	- 0000520: [exif] crash when loading certain image.
	           (Reported by Christian Weiske)
	- 0000519: [exif] Another Minolta G500 file impossible to read after fix.
	           (Reported by Alexander Rabtchevich)
	- 0000513: [exif] Sony Makernote crashes exiv2.
	           (Reported by Aaron D. Campbell)
	- 0000512: [exif] Wrong AFPoints mapping for Canon cameras.
	           (Reported with patch by Rob Walker)
	- 0000511: [exif] Minolta G500 RAW format support.
	           (Reported by Udi Fuchs)
	- 0000509: [miscellaneous] Since v0.14 the version check macro doesn't work
	           in a precompiler #if test anymore. (Reported by Udi Fuchs)
	- 0000449: [jpeg i/o] Uncouple IPTC and Exif reading.
	         - [exif] Updated Nikon lens info to v2.30 of Robert Rottmerhusen's 
	           lens database.
	         - [Exif] Added additional values to the Exif.CanonCs.ISOSpeed.
	           lookup table. (Patrick Markert)
	         - [Exif] Canon ModelId patch. (Gerry Patterson)
	         - [miscellaneous] Updated German translation. 
	           (Oliver Dörr)
	         - [miscellaneous] Updated Russian translation. 
	           (Alexandre Prokoudine)
	         - [miscellaneous] Updated French translation. 
	           (Stephane Pontier)


Changes from version 0.13 to 0.14
---------------------------------

* Exiv2 utility
	         - [tools] exiv2 utility: Fixed handling of multiple rename options 
	           -r, -t, -T

* Exiv2 library
	- 0000508: [exif] Fixed mapping of CRW rotation info to Exif orientation.
	           (Reported and analysed by Marco Piovanelli)
	- 0000507: [exif] Fixed RAF read-support for systems without mmap. (Reported
	           by Udi Fuchs)
	         - [exif] Added tag names for a few tags used by Windows Vista and 
	           ACDSee. (Gilles Caulier)
	         - [exif] Updated Nikon lens info to v2.20 of Robert Rottmerhusen's 
	           lens database.
	         - [build environment] Switched to libtool's -version-info versioning
	           system.
	         - [build environment] By default, do not use the -g compiler option.
	         - [build environment] Added --disable-printucs2 configuration option
	           to disable Windows tag character convertion using libiconv.
	         - [build environment] Changes to make Exiv2 cross-compile smoothly 
	           for win32 (Udi Fuchs)
	         - [build environment] Removed deprecated exiv2-config script and
	           some obsolescent autoconf macros pointed out by Udi Fuchs.
	         - [miscellaneous] Changed AnyError to inherit from std::exception; 
	           changed the signature of AnyError::what(). (Suggested by Marco 
	           Piovanelli)
	         - [miscellaneous] Fixed version check macro to actually check the 
	           runtime version and not the compile-time version. Added version() 
	           and versionNumber() functions.
	         - [miscellaneous] Updated German translation. (Oliver Dörr)
	         - [miscellaneous] Changed name of installed translation files to
	           lower case exiv2.mo. (Highlighted by Angelo Naselli)


Changes from version 0.12 to 0.13
---------------------------------

* Exiv2 utility
	- 0000504: [tools] exiv2 utility: allow use of -M and -m options with extract
	           and insert actions.

* Exiv2 library
	- 0000503: [metadata] Tiff generated by photoshop crashes exiv2 
	           (digikam bug 139658).
	- 0000502: [iptc] New TIFF parser: Decode IPTC from Exif.Image.IPTCNAA.
	           (Reported by Walter Hangartner)
	- 0000501: [iptc] IPTC field parsing is still too strict: shouldn't fail if 
	           the type is not as expected. (Reported by Elsa Nordh)
	- 0000497: [tools] exiv2 tool doesn't respect unix file rights. (Reported and
	           analysed by fabien)
	- 0000491: [miscellaneous] Probe exiv2 for the extensions it supports.
	           (Suggested by Will Stokes)
	- 0000461: [miscellaneous] Add i18n support. Requires gettext.
	           (Gilles Caulier)
	           The currently available translations are still work in progress:
	           Finnish by Mikael Lammentausta
	           French by Gilles Caulier (ported from libexif) and Olivier Tilloy
	           German by Gilles Caulier (ported from libexif) and Oliver Dörr
	           Russian by Alexandre Prokoudine
	           Polish, Spanish by Gilles Caulier, ported from libexif
	- 0000460: [exif] Exiv2 should support to decode/encode Windows tags
	           Exif.Image.0x9c9b-0x9c9f. Requires libiconv. 
	           (Suggested by Jose Oliver)
	- 0000452: [exif] Non-intrusive writing does not update IFD.
	         - [exif] Updated Nikon lens info to v2.15 of Robert Rottmerhusen's 
	           lens database.
	         - [exif] Added read-support for Fujifilm RAF images.
	         - [exif] Image class hierarchy refactored: Image now has containers
	           and provides default implementations for most methods. Calling 
	           an unsupported method of any Image subclass now results in an 
	           exception. Added a method to access the MIME type of an image.

* MSVC related
	         - [exivsimple] Added get and set thumbnail functions.
	           (Christian Kuster)


Changes from version 0.11 to 0.12
---------------------------------

* Exiv2 utility
	- 0000493: [tools] exiv2 -T DST problem.
	           (Fix suggested by John <johnpcass at yahoo dot com>)
	- 0000459: [exif] Exiv2 tool: Added a variable for the original filename to 
	           the rename option. (Patch by Tobias Jahn)

* Exiv2 library
	- 0000498: [exif] Exiv2 cannot read the Exif data written after deleting all
	           tags.
	- 0000496: [metadata] Digikam bug 136855: Editing metadata on a few selected
	           imagefiles and clicking forward or apply crashes digikam.
		   (Reported by several digikam users)
	- 0000495: [exif] Image with corrupted metadata crashes Exiv2. (Reported as 
	           digikam bug 136932 by Rainer Krienke)
	- 0000490: [build environment] PNG support doesn't compile on MinGW/msys.
	           (Reported by Udi Fuchs and Will Stokes)
	- 0000489: [build environment] exiv2.pc.in includes private/static libs by 
	           default. (Reported with patch by Rex Dieter)
	- 0000488: [metadata] GPSInfo Metadata should return decimal numbers.
	           (Feature requested by Fabien)
	- 0000486: [build environment] Test bugfixes-test.sh error under Mac OS X x86.
	           (Reported with fix by Max Lapshin)
		 - [exif] Updated Nikon lens info to v2.07 of Robert Rottmerhusen's 
	           lens database.
		 - [metadata] Added methods to access built-in read-only Exif taglists
	           and IPTC record lists. (Initiated by Max Lapshin)
		 - [iptc] Improved IPTC record descriptions using IIM4 specification
	           version 4.1. (Gilles Caulier)
		 - [exif] Improved Exif tag descriptions using Exif specification 2.2
	           and libexif. (Gilles Caulier)
	         - [exif] Added and improved pretty print functions for some Exif 
	           tags. (Gilles Caulier)
	         - [exif] Updated Minolta makernote. (Gilles Caulier, Paul Tribick)

* MSVC related
	- 0000487: Crash in exiv2.exe (built with VC++ 2005 Express) when examing TIFF
	           images (Reported with patch by Dimitri Schoolwerth)


Changes from version 0.10 to 0.11
---------------------------------

* Exiv2 utility
	- 0000485: [tools] Weird behaviour when Exif comments contain quotes (Reported
	           by Scott Baker)
	         - Changed exiv2 del command to delete all occurences of a tag. 
	           (Christophe Paris)

* Exiv2 library
	- 0000483: [jpeg i/o] Assertion `sizeIptc' fails when reading metadata from
	           JPEG file. This happened when an image has an empty IPTC IRB.
		   (digikam bug 132582)
	- 0000482: [exif] SONY DSLR-A100 RAW image crashes Exiv2. (Reported to ufraw 
	           by Vishnu Natchu)
	- 0000480: [iptc] JPEG APP13 (used to store IPTC IRB) can not be larger than
	           64kB but IRB buffers can. (digikam bug 130525)
	- 0000479: [exif] JPEGs edited with LightZone crash Exiv2. (Reported by Daniel
	           Hobe)
	- 0000475: [design] Performance: Don't read TIFF-based files completely, use
	           memory mapping (only on Linux) to read only what is needed. Improves
		   performance by factor 6.
	- 0000471: [exif] New TIFF parser: Create a CommentValue rather than a 
	           DataValue for Exif.Photo.UserComment. (Reported with test program
		   by Marcel Wiesweg)
	         - [exif] New TIFF parser: Extract TIFF thumbnail from IFD1 if there 
		   is one.
	         - [exif] Added read support for PNG images (Gilles Caulier)
		 - [exif] Updated Canon makernote tags and decoded additional composite
	           tags, based on Exiftool. Note that some tag names changed. 
		   (David Cannings)
		 - [exif] Updated Nikon lens info to v2.02 of Robert Rottmerhusen's 
	           lens database.
		 - [exif] Various smaller tag updates (Gilles Caulier, Jim Westveer, 
	           Nicolas Vilars, Robert Peter)

* MSVC related
	- 0000455: [build environment] Exiv2 finally works with MSVC 2005. (Thanks to 
	           Stephen and Maciej Sakrejda aka Maciek)


Changes from version 0.9.1 to 0.10
----------------------------------

* Exiv2 utility
	- 0000468: [tools] Added -P option to control what information is displayed
		   in print mode, added -b and -u options to control output of large 
		   values and unknown tags. (Better print control suggested by Udi Fuchs)
	         - Display filename in print mode if processing multiple images, 
		   like grep does. (Roger Larsson)

* Exiv2 library
	- 0000469: [miscellaneous] MemIo behaviour differs from FILE* and FileIo.
	           (Reported by Dimitri)
	- 0000462: Support TIFF format, part 1: Read support for TIFF and TIFF-based
	           RAW formats, including NEF, CR2, PEF, SR2, DNG and MRW.
	- 0000458: [build environment] Support pkg-config tool, 
	           removed <prefix>/include/exiv2 path from exiv2-config output.
		   (Suggested by Udi Fuchs)
	- 0000456: [miscellaneous] Check for 0 pointer before invoking std::string 
	           constructor on C-string.
		 - Added Minolta makernote. (Gilles Caulier)
		 - Added support for Exif.Image.Orientation for Canon CRW images.
		 - Improved the print functions for Exif.Nikon[13].AFFocusPos.
		   (Roger Larsson)
		 - Updated some Canon labels and translations (Patrice Boissonneault)
		 - Changed some Nikon tag names. (Based on feedback from Udi Fuchs)
		 - Added EXIV2_CHECK_VERSION macro for applications to check at runtime 
		   which version of Exiv2 is installed.

* MSVC related
		   Added COM project. (Patrice Boissonneault)


Changes from version 0.9 to 0.9.1
---------------------------------

* Exiv2 library
	- 0000451: [exif] Fixed bug where an invalid Exif tag was created for 
	           the user comment, when the tag was newly added to an image.
		   (Thanks to Anatoliy Kovalenko for reporting this bug)
		 - Added enum MetadataId and Image::supportsMetadata() to check what 
	           metadata an image class supports. Changed CrwImage to silently 
	           ignore calls to Iptc related functions instead of throwing an Error.
		   (Thanks to Will Stokes for suggesting the check feature)
		 - Cleaned up some #include statements (mentioned here because this 
		   may lead to unexpected compiler errors).


Changes from version 0.8 to 0.9
-------------------------------

* Exiv2 utility
	- 0000450: [exif] Added action "fixiso" to copy the ISO setting from Nikon 
	           Makernotes to the regular Exif tag Exif.Photo.ISOSpeedRatings.
	- 0000448: [tools] Added options -p and -t, -T to preserve file timestamps and
	           set the timestamp according to the Exif timestamp.
	           (Thanks to Stephan Ahlswede for suggesting the -p feature)
	- 0000446: [misc] Added option -c to set the JPEG comment to the utility.
	           (Thanks to Tristan Savatier for the suggestion)

* Exiv2 library
	- 0000447: [iptc] Fixed a buffer overflow in sscanf. (Thanks to Maciej Sakrejda
                   aka Maciek for reporting this bug and the hard work to recreate it)
	- 0000438: [exif] Write support for Canon raw images.
		 - [exif] Updated Nikon lensdata to v2.00 of Robert Rottmerhusen's 
		   amazing lens database. (Thanks to Robert for keeping me updated.)
		 - [build environment] Added an option to enable/disable dependency-
	           tracking to the configure script, which is useful to create 
		   "Universal Binaries" under Mac OSX. 
		   (Thanks to Will Stokes for the suggestion)
	         - [exivsimple] Changed DllTypeId::time and DllTypeId::date to
	           DllTypeId::isoTime and DllTypeId::isoDate to avoid a name clash.


Changes from version 0.7 to 0.8
-------------------------------

* Exiv2 utility
                 - [tools] Added -S .suf option to the utility. This allows, e.g, 
	           to use Canon THM files as source file for the insert command.
		 - [doc] Added man page. (Based on Peter KELEMEN's Debian man page.)

* Exiv2 library
	- 0000445: [exif] Setting the comment on an image with an existing comment has
	           no effect.
	- 0000444: [iptc] Exiv2 should not panic on slightly misformed IPTC format.
	- 0000443: [exif] Exiv2 gives up on corrupted IOP directory.
	- 0000440: [iptc] IPTC time without timezone raises exception.
        - 0000438: [exif] Support Canon raw images (CRW and THM), currently read-only.
	- 0000437: [exif] exiv2 -pt crashes if Exif.Canon.ImageNumber is < 1000.
	- 0000433: [exif] Core dump if the value is empty.
	- 0000424: [exif] Ifd::read, MakerNote::read and related methods should have 
		   access to the complete data buffer.
		 - [exif] Updated Nikon lensdata to v1.19 of Robert Rottmerhusen's 
		   list.
		 - Added a tag and dataset title (label).
		 - Added #ifndef SUPPRESS_WARNINGS blocks around all output from the 
		   library: compile with -DSUPPRESS_WARNINGS for a quiet library.
		 - Implemented "copy-on-write" strategy for MemIo to ensure that the 
		   original buffer is only copied if necessary and never modified.
		 - Added exiv2-config script. Applications that include exiv2 headers 
		   and link with the installed library can use this in their build 
		   commands.


Changes from version 0.6.2 to 0.7
---------------------------------

* Exiv2 utility
	- 0000422: [tools] Allow renaming pictures taken within one second.
	           (Reported by jussi AT jjussi DOT com)
	- 0000423: [tools] Fixed problems with paths and -l option on Windows.
	         - [tools] Improved output data and format of the utility to 
		   show the key.

* Exiv2 library
	- 0000404: [design] Insideout design change; made class Exiv2::Image
	           the top-level class of the library. (Brad Schick)
	- 0000403: [design] Added I/O abstraction and implementations. (Brad Schick)
	- 0000402: [design] Split image.cpp and hpp files into base class and 
	           subclass files. (Brad Schick)
	- 0000425: [exif] Added default type info to Exif tagtables. 
	- 0000427: [misc] Standardized factories according to the implementation. 
	           of ImageFactory (MakerNoteFactory). Linking with mn.o is not
		   necessary anymore.
	- 0000420: [build environment] Defines should have a library specific 
	           prefix, like e.g., EXV_HAVE_CONFIG_H.
	- 0000417: [exif] ExifData needs proper copy constructor and assignment. 
	- 0000426: [iptc] Fixed problem which prevented Exiv2 from reading IPTC 
	           from jpeg files. (Jeffrey J. Early and others)
		 - [feature] Added Olympus, Panasonic and a basic Sony Makernote. 
	           (Thanks to Will Stokes for the initial Olympus files)
		 - [feature] Improved Canon and Nikon Makernote support.
		   (Thanks to Robert Rottmerhusen for his Nikon lens info)
		 - [exif] Relaxed checking of Makernote IFD next pointer. 
		 - [design] Overhauled exception handling.


Changes from version 0.6.1 to 0.6.2
-----------------------------------

* Exiv2 utility
	         - [feature] New -M option to run modification commands directly 
                   from the command line.
	- 0000421: [tools] Command parser fails if no type is specified with a 
	           modify command.
	- 0000416: [exif] Fix Exiv2 modify action to use non-intrusive writing
	           whenever possible.
	- 0000418: [feature] Add Exiv2 option to specify path of extracted.
	           and inserted files. (Suggested by Brian Pugh)

* Exiv2 library
	- 0000408: [build environment] 0.6.1 does not build on OS X: Add libtool
	           support for automatic library creation (see README).
	           (Reported by Thomas Lunde and others)
	- 0000409: [build environment] compiling emits type warnings. (Thomas Lunde
	           and others)
	- 0000410: [build environment] config.h must be installed, -DHAVE_CONFIG_H
                   flag should not be necessary. (Daniel Foote and others)
	- 0000411: [exif] Support non-standard Ifd layout. (Jeffrey J. Early)


Changes from version 0.6 to 0.6.1
---------------------------------

* Exiv2 utility

	* Added option to modify Iptc and Exif metadata based on a command file
	
* Exiv2 library

	* Fixed bug #407: Writing metadata to image after modifications may
	  lose thumbnail. Thanks to Jeffrey J. Early for pointing out this bug.
	
	* Added CommentValue


Changes from version 0.5 to 0.6
-------------------------------

* Exiv2 utility

	* Added options to extract, insert and delete different types of metadata 

	* Added option to print the Jpeg comment 

	* Changed semantics of print option `i' to Iptc
	  (`t' for translated Exif data)

	* Replaced std::cout << "\n" with std::endl to flush and get the 
	  sequence with error output right
	
* Exiv2 library

	* Added support to build Makernotes from scratch

	* Added support to build IFD1 (Thumbnail) entries from scratch
	
	* Open image files on demand rather than keeping them open. Bug #393 (Brad)
	
	* Added data area concept to Value, ValueType, Entry, Ifd. Feature #395
	
	* Revamped Thumbnail classes to use the new data area feature. Feature #398

	* Added ExifData::setJpegThumbnail 
	
	* Improved implementation of Exif and Iptc keys, added support for
          keys with unknown tag names
		
	* Added ExifData::op[] and Exifdatum op= and similar operators to 
	  IptcData and Iptcdatum. This operator stuff allows for things like: 
	  exifData["Exif.Thumbnail.Compression"] = uint16_t(6);
	
	* Converted class hierarchies to use std::auto_ptr where appropriate

	* Replaced custom integer types with C99 types

	* Added test data and drivers to the repository
	
	* Right align output stream for date and time writes. Bug #397 (Brad)
		
	* Updated documentation

* MSVC related (Thanks to Brad Schick)
	
	* Added exivsimple: a Windows dll that allows languages such as 
	  C# and VB to access limited metadata capabilities (Brad)

	* Added and write2-test projects to MSVC build (Brad)
	
	* Added mn.cpp to all MSVC projects. Fixes bug #396 (Brad)
	
	* Fixed various MSVC 7.1 build errors. Bug #394 (Brad)
	
	* Added write-test to MSVC build project (Brad)


Changes from version 0.4 to 0.5
-------------------------------

* Exiv2 utility

	* Added -pI print mode to print Iptc data.

	* Bugfix: Use timegm() and gmtime() instead of mktime() and
	  localtime() to avoid problems when adjusting timestamps.
	  Thanks to Samir Rostum for pointing out this bug.

	* Added timegm() from the tz distribution for platforms which
	  do not have this function.

* Exiv2 library

	* Added full Iptc read and write support. Thanks to Brad Schick for
          this and a lot more contributions to this release.

	* Converted Metadatum to an abstract base class, added Exifdatum
	  and Iptcdatum classes. Migration of existing programs: Use class
	  Exifdatum instead of Metadatum. (Brad Schick)
	
	* Added Key, ExifKey and IptcKey class hierarchy. Requires changes
	  to existing pograms: Use class ExifKey where plain std::string
	  keys were used before (e.g., ExifData::findKey()).

	* Changed Exif keys to 'Exif.ifdItem.tagName' to be consistent
	  with the new Iptc keys. All keys of existing programs need to be
	  updated. See the web pages or documentation for the new keys.
	
	* Revamped class Image and introduced byte* interface. (Brad Schick)
	
	* Added autoconf configure script.

	* Added MSVC project files. (Brad Schick)
	
	* Appended 'Id' to Ifd ids to work around a g++-3.4 problem.

	* Updated documentation.

	
Changes from version 0.3 to 0.4
-------------------------------

* Exiv2 utility

	* Less rigid command line argument parsing: Guess the action from the 
          option given and use print as the default action.

	* Print Nikon makernote values for ISO Speed, Quality and WhiteBalance
          in the summary.

* Exiv2 library

	* Fixed ExifData::copyFromMetadata to automatically add missing
          offset tags. Thanks to Joseph Heled for identifying this bug.

	* Started to fix MSVC errors and warnings. Thanks to Steven R. King for
	  his work to get Exiv2 to compile on MSVC. The task is not yet 
	  completed but the library should compile without too many warnings.

	* Added three different Nikon makernote formats.

	* IfdMakerNote: Replaced too simple prefix with a more general concept 
          of a makernote header. 

	* Added the makernote buffer to the arguments passed to the makernote 
	  create function. This allows the makernote create function to 
          determine the exact makernote needed based on its content. The new 
          concept is used to automatically determine which of the three Nikon 
          makernotes to create.

	* Fixed MakerNoteFactory::match() to prefer an exact match over a 
          wildcard match with the same number of matching characters (Key 
          "Nikon" now prefers registry entry "Nikon" over "Nikon*"), simplified
          the return value of match() to an integer score value.

	* Sigma makernote: Added "FOVEON" and "*" to registry. 

	* Added len argument and boundary checks to various read functions,
	  in particular, the IFD read method. 

	* Improved handling of corrupt IFDs: Truncate field if offset points 
	  outside of the available buffer.

	* Slightly improved error handling: strError() is now a static member 
	  of ExifData.

	* Added exifcomment example program.

	* Fixed an embarassing bug in ExifData::updateEntries, which caused 
	  write after erasing metadata to write back the original metadata.

	* Fixed TypeInfoTable to return invalid if typeId is too large.

	* Makefile: (un)install targets now only (un)install exiv2.

	* Code cleanup, documentation updates and miscellaneous bug fixes.
