this packages don't have MesaDemos included,
for  libglut library you need libglut-3.7-i386-1.tgz, found
it to directory 'pasture' of Slackware 9.0 ftp site

ATTENTION!!
..the package libglut-3.7-i386-1.tgz don't work ok with openvrml package (this return an error)
..I add package libglut-3.7.1-i686-1.tgz and this work ok.