Use symbolic array indices to clarify.

Implementation guidance by Michel Dänzer, final testing by Timo Aaltonen.

There might be a bug elsewhere, but this is a simple work-around for now.
See bug 12614

Fix mem leak in SSE code generation path (Michel Dänzer) and don't crash if _mesa_exec_malloc() returns NULL.

Use a GCC option to work around aliasing bugs. See commit 013dbcd6 for
more details.
(cherry picked from commit 01b18abf)

Conflicts:

    configs/freebsd

Quite a while ago, the GCC option -fexceptions was added for building
libglut. See here:

  http://article.gmane.org/gmane.comp.video.mesa3d.devel/9499

This was missing in the linux-dri targets.
(cherry picked from commit dbcd20f1)

Mesa currently disables -fPIC for DRI on x86, but most Linux distros are
re-enabling -fPIC for all DRI arches. Let's just do that here since
that's normally what's wanted for shared libraries. Some justification:

http://bugs.gentoo.org/show_bug.cgi?id=110840#c9

On the other hand, position-independent code is only necessary when
building shared libraries, so disable it for the static cases.
(cherry picked from commit c3b5adaa)

Most Linux distros work around aliasing problems in Mesa by compiling
with the GCC option -fno-strict-aliasing. Two examples:

  https://bugs.freedesktop.org/show_bug.cgi?id=6046
  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=394311

This makes -fno-strict-aliasing the default with a comment that
developers should consider commenting it out. There is a already a note
about these bugs in docs/helpwanted.html.
(cherry picked from commit 013dbcd6)

(Cherry-pick from master)

Add entrypoints to glapi XML file and regenerate files.
Implement glStencilOpSeparateATI().
Consolidate some code in stencil.c

Conflicts:

	src/mesa/glapi/dispatch.h
	src/mesa/glapi/glapioffsets.h
	src/mesa/glapi/glapitable.h
	src/mesa/glapi/glapitemp.h
	src/mesa/glapi/glprocs.h
	src/mesa/main/enums.c
	src/mesa/main/state.c
	src/mesa/sparc/glapi_sparc.S
	src/mesa/x86-64/glapi_x86-64.S
	src/mesa/x86/glapi_x86.S

Since libglut is no longer hardcoded, we can build the xdemos programs
so long as a GLX enabled libGL and libGLU have been built.
(cherry picked from commit 06ca1454)

(cherry picked from commit 16291467)

(cherry picked from commit 9ef1d9f0)

(cherry-picked from commit c05aa5ec)

Conflicts: progs/demos/Makefile
           progs/xdemos/Makefile

GL_LIB_DEPS was missing -lXdamage and -lXfixes, which was causing
linker errors when trying to build the programs.
(cherry picked from commit 3b9e28d5)

This typo could lead to the i915tex driver waiting for an EXE only fence as RW,
causing it to abort with an error.

The linux-static target was missing necessary libraries and hardcoding
their location to /usr/X11R6/lib. This makes it comparable to the x86
and x86-64 static targets.
(cherry picked from commit 95142095)

Some more entries in progs/*/.gitignore that were in master.