The xlabs were not able to display any of the tests:
	GLUT: Fatal Error in program: could not open display: :0

Further, the Mesa library was compiled with gcc, so glut must also be
to avoid errors like 
    Undefined                       first referenced
     symbol                             in file
    __eprintf                           /u/ma/hohn/bin/sparc/usr/local/lib/libMesaGL.a(context.o)
    ld: fatal: Symbol referencing errors. No output written to test1