radeon/uvd: remove comment about RV770

It doesn't seem to support field based decode after testing.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
glsl: Add strings.h on non-MSC platforms

* IEEE Std 1003.1-2001 placed strcasecmp() in strings.h.
* ISO C99 doesn't mention strcase* in string.h
* On all platforms I could find, strcasecmp is in strings.h and string.h
  as a compatibility layer for software written pre-2001 POSIX
* Technically strcasecmp should be only in strings.h and the man
  pages back this up.
* Tested build on CentOS and Haiku

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
docs: fix up status of softpipe, llvmpipe

The docs were never really up to date for them, missing just about everything.
So mark them off as all done for GL 3.3 (though softpipe is in fact quite
broken for some newer things especially wrt texturing, and both don't have
compliant, real msaa support). And add the extensions missing too (no
guarantee of completeness).

Reviewed-by: Dave Airlie <airlied@gmail.com>
draw: fix base instance handling in llvm path

The base instance needs to be passed to the jited function, otherwise the
instanced data fetch will only work with the same start instance when the
jit function was created (and baking that into the key instead is not a viable
option).
This fixes piglit arb_base_instance-drawarrays (modulo some unrelated
core/compat context trouble I get for the test).
And fix the pipe cap bit in llvmpipe for it now that it actually works (it
already worked for softpipe).

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>