Merge branch 'mesa_7_6_branch' into mesa_7_7_branch

Conflicts:
	configure.ac
	progs/demos/morph3d.c
	progs/demos/textures.c
	progs/glsl/shtest.c
	progs/glsl/texaaline.c
	progs/tests/packedpixels.c
	progs/xdemos/corender.c
	src/mesa/main/version.h