tests/backspecular: test two-sided lighting and specular color

This was sitting uncommitted in my local tree for a long time.
glxinfo: query and print list of compressed texture formats

When the -l (print limits) option is used.
wglinfo: query and print list of compressed texture formats
osdemo32: assorted fix-ups

Remove dead code.  Print GL_DEPTH_BITS.  Use a 32-bit depth buffer.
glxgears: also print VisualID with -info option

To help with debugging.
mesa-demos: Fixes a bug in demo2 application

Vertices array is being passed to glColorPointer whereas
its supposed to pass the color array

Signed-off-by: Yasir-Khan <yasir_khan@mentor.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
tests: include glut_wrap.h

As we do in all the other tests.