* allow building gdk-pixbuf without libtiff installed


git-svn-id: https://svn.exactcode.de/t2/trunk@42299 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc
	* link mesa with shared llvm libs, solve multiple static initialization bugs



git-svn-id: https://svn.exactcode.de/t2/trunk@42300 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc
	* updated mesa-demos.cache, mostly for glu


git-svn-id: https://svn.exactcode.de/t2/trunk@42301 c5f82cb5-29bc-0310-9cd0-bff59a50e3bc