mesa: use signed temporary variable to store _ColorDrawBufferIndexes

_ColorDrawBufferIndexes is defined as GLint* and using a GLuint*
will result in the first part of the conditional to be evaluated to
true always.

Unintentionally introduced by the following commit, this will result
in a driver segfault if one is using an old version of the piglit test

    bin/clearbuffer-mixed-format -auto -fbo

commit 03d848ea1003abefd8fe51a5b4a780527cd852af
Author: Marek Olšák <marek.olsak@amd.com>
Date:   Wed Dec 4 00:27:20 2013 +0100

    mesa: fix interpretation of glClearBuffer(drawbuffer)

    This corresponding piglit tests supported this incorrect behavior instead of
    pointing at it.

Cc: Marek Olšák <marek.olsak@amd.com>
Cc: 10.0 9.2 9.1 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
automake: include the git sha in the opengl version string for oot builds

Acked-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
st/mesa: use signed temporary variable to store _ColorDrawBufferIndexes

The temporary variable used to store _ColorDrawBufferIndexes must be
signed (GLint), otherwise the following conditional will be incorrectly
evaluated. Leading to crashes in the driver/mesa or accessing/writing
to arbitrary memory location. The bug dates back to 2009.

Cc: 10.0 9.2 9.1 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
mesa: Define helper function to get the number of texture layers.

And to check if it can have layers at all.  This will be used by the
implementation of ARB_shader_image_load_store.

v2: Fix constness of texobj argument, use assert and return reasonable
    default rather than calling unreachable() in default switch case.

Reviewed-by: Paul Berry <stereotype441@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
mesa: Add state data structures required for ARB_shader_image_load_store.

v2: Increase MAX_IMAGE_UNITS to what i965 wants and add a separate
    MAX_IMAGE_UNIFORMS define, clarify a couple of comments.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
mesa: Add driver interface for ARB_shader_image_load_store.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
mesa: Add MESA_FORMAT_ABGR2101010.

Including pack/unpack and texstore code.  This texture format is a
requirement for ARB_shader_image_load_store.

Acked-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
mesa: Add MESA_FORMAT_SIGNED_RG88 and _RG1616.

Including pack/unpack and texstore code.  ARB_shader_image_load_store
requires support for the GL_RG8_SNORM and GL_RG16_SNORM formats, which
map to MESA_FORMAT_SIGNED_GR88 and MESA_FORMAT_SIGNED_GR1616 on
little-endian hosts, and MESA_FORMAT_SIGNED_RG88 and
MESA_FORMAT_SIGNED_RG1616 respectively on big-endian hosts -- only the
former were already present, add support for the latter.

Acked-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
mesa: Implement the GL entry points defined by ARB_shader_image_load_store.

v2: Name image format classes consistently, fix array and 3D teximage
    selection with layered = GL_FALSE, make sure that the
    user-specified layer is less than the number of texture layers,
    add some asserts.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
glapi: Update dispatch XML files for ARB_shader_image_load_store.

And uncomment the relevant lines of the dispatch sanity test.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
mesa: Add ARB_shader_image_load_store to the extension table.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
mesa: Add image parameter queries for ARB_shader_image_load_store.

v2: Fix off-by-one error in index parameter bound checking.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
mesa: Unbind deleted textures from the shader image units.

From ARB_shader_image_load_store:

   If a texture object bound to one or more image units is deleted by
   DeleteTextures, it is detached from each such image unit, as though
   BindImageTexture were called with <unit> identifying the image unit
   and <texture> set to zero.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
mesa: Validate image units when the texture state changes.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
docs: Mark ARB_shader_image_load_store as work in progress.

Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Paul Berry <stereotype441@gmail.com>
clover: Store map result into a temporary vector in clCreateProgramWithBinary.

This avoids the inefficient multiple evaluation of the map result in
the code below.  It should cause no functional changes.

Tested-by: "Dorrington, Albert" <albert.dorrington@lmco.com>
clover: Add missing fields to the clover::module serialization code.

Tested-by: "Dorrington, Albert" <albert.dorrington@lmco.com>
clover: Don't try to build programs created from a binary again.

According to the spec it's allowed to call clBuildProgram() on a
program created from a user-specified binary.  We don't need to do
anything to build the program in that case.

Reported-and-tested-by: "Dorrington, Albert" <albert.dorrington@lmco.com>
clover: Fix clover::keys and ::values to deal with r-value references properly.

Returning a reference is incorrect if the specified pair was a
temporary -- Instead of that, use decltype() to deduce the correct
return type qualifiers.  Fixes a crash in clCreateProgramWithBinary().

Reported-and-tested-by: "Dorrington, Albert" <albert.dorrington@lmco.com>
scons: add new shaderimage.c file to the build