use right file name when looking for .mtl git-svn-id: svn://svn.icculus.org/netradiant/trunk@129 61c419a2-8eb2-4b30-bcec-8cead039b335
git-svn-id: svn://svn.icculus.org/netradiant/trunk@1 61c419a2-8eb2-4b30-bcec-8cead039b335