- Added mesa-6.4-multilib-fix.patch to instrument and attempt to fix Mesa
        bin/installmesa script to work properly with multilib lib64
        architectures.
    - Set and export LIB_DIR and INCLUDE_DIR in spec file 'install' section,
        and invoke our modified bin/installmesa directly instead of using "make
        install".
    - Remove "include/GL/uglglutshapes.h", as it uses the GLUT license, and
        seems like an extraneous file anyway.