gallivm: Fix build with LLVM 3.6 (r221751).

Tested with LLVM 3.3, 3.4, 3.5, and 3.6.

Trivial.
Revert "clover: Fix build after llvm r221375"

This reverts commit cd93d82ba9ec8cd8e4f54bbee16d7b47c542de71.

llvm r221375 was reverted, so this commit needs to be too.
st/glx: Implement GLX_EXT_create_context_es2_profile.

apitrace now supports it, and it makes it much easier to test
tracing/replaying on OpenGL ES contexts since
GLX_EXT_create_context_{es2,es}_profile are widely available.

Reviewed-by: Brian Paul <brianp@vmware.com>
nvc0: remove unused mm_VRAM_fe0

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>