PRAGMA_EXPORT_SUPPORTED is never defined.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77749
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

This has been wrong for many years.  It was originally 0x000FFFFF and long
ago there was discussion about whether GL_ALL_ATTRIB_BITS should include
the then-new GL_MULTISAMPLE_BIT bit.  Eventually the ARB decided that
glPushAttrib(GL_ALL_ATTRIB_BITS) should save all current and future
attribute groups (hence ~0).  Unfortunately, Mesa's gl.h was never updated.

This was just recently spotted by Eric Anholt and reported as a bug to the
ARB.  Ian, Jon Leech and I discussed it at the ARB meeting and decided to
change Mesa's value to reflect the ARB's decision.

Acked-by: Eric Anholt <eric@anholt.net>

glext.h has had all the necessary bits for years.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

* Goodbye BeOS, we hardly knew thee
* As BeOS was gcc2 only, there was little chance
  of this being useful.
* Doesn't effect Haiku in any meaningful way

Reviewed-by: Brian Paul <brianp@vmware.com>

Reviewed-by: Matt Turner <mattst88@gmail.com>

IIRC, this is MacOS 9.x stuff.

Reviewed-by: Matt Turner <mattst88@gmail.com>

Reviewed-by: Matt Turner <mattst88@gmail.com>

Reviewed-by: Eric Anholt <eric@anholt.net>

Reviewed-by: Eric Anholt <eric@anholt.net>

The code for this was removed from Mesa some time ago.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>