glapi: Do not use backtrace on DragonFly.

execinfo.h is not available on DragonFly.

Fixes this build error.

  CC       glapi_gentable.lo
glapi_gentable.c:44:22: fatal error: execinfo.h: No such file or directory

Signed-off-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
gallium: Add a uif() helper function to complement fui()

I found myself often wanting this when I'm printing out a uint32_t mapping
of some GPU data, and I want to put in an interpretation of that value as
a float.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
gbm: Fix a debug log message

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
gbm: Log at least one dlerror() when we fail to open any drivers.

We don't want to log every single error (such as all the ones where the file
wasn't even present in our list of search paths), but if you didn't find any
driver, then seeing at least one error is useful (since the common case as a
developer is a single DEFAULT_DRIVER_DIR or GBM_DRIVERS_PATH entry).

v2: Rebase on swrast changes.

Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
r600g: Implement GL_ARB_texture_query_lod

Requires Evergreen or later

v2 (Andreas): Update relnotes/10.3

Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
r600g: Add IMUL_HI/UMUL_HI support

Fixes fs-imulExtended, fs-imulExtended-only-msb, fs-umulExtended,
fs-umulExtended-only-msb piglit tests.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
r600g: Implement gpu_shader5 integer ops

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
r600g: gpu_shader5 gl_SampleMaskIn support

Map TGSI_SEMANTIC_SAMPLEMASK to register/component.
Enable face register when sample mask is needed by shader.
Requires Evergreen/Cayman

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
target-helpers: Do not build kms_dri on libdrm-less platforms.

Fix build since 3b176c441b7ddc5f7d2f891da3f76cf3c1814ce1 for
dri_platform=none hosts.

Signed-off-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>