mesa: Rename API_OPENGL to API_OPENGL_COMPAT.

This should help avoid confusion now that we're using the gl_api enum
to distinguishing between core and compatibility API's.  The
corresponding enum value for core API's is API_OPENGL_CORE.

Acked-by: Eric Anholt <eric@anholt.net>
Acked-by: Matt Turner <mattst88@gmail.com>
Acked-by: Kenneth Graunke <kenneth@whitecape.org>
50 files changed