Make FindGLEW aware of multiarch on linux systems

Multiarch distros such as Debian are keeping libraries
in /usr/lib/<platform>/ instead of /usr/lib. Added an
additional hint for GLEW library location to deal with
this.
Merge pull request #196 from Nazg-Gul/blender-fixes

Make FindGLEW aware of multiarch on linux systems
Fix baseline OBJ's so they're valid OBJ files.
Merge https://github.com/dctsystems/OpenSubdiv