merge Mesa 18.3.4.

this work is mostly from maya@ with a little help from myself
via these github commits:


commit 57df9d9b59df14fd6ac8e30832ce4f29572a33c0
Author: coypu <coypu@sdf.org>
Date: Mon Mar 4 12:24:37 2019 +0200

Make GCC happier about prototype, include right header for __HAVE_ATOMIC64_OPS

commit 93c2f416aa316cc3d0665661c9f927f6949cdd37
Author: coypu <coypu@sdf.org>
Date: Mon Mar 4 12:16:56 2019 +0200

Make the u_atomic.c fallback locked 64bit atomics more suited

for the netbsd case: we are using __GNUC__ compilers, but without
libatomic. so we are emitting the __GNUC__ names.

Use __HAVE_ATOMIC64_OPS which is the netbsd name for this condition
(we don't run configure)

commit 84c2bf2f622f8a78f68ad1ca35b90bb991bdaab0
Author: coypu <coypu@sdf.org>
Date: Sun Mar 3 20:02:38 2019 +0200

Remove unused padding to struct.

The extra space is in the flexible array member at the end of
struct drm_i915_query_topology_info.

Clang dislikes having an extra member to the struct after the flexible
array member.

commit 00f432b0edf95a6e292e8259ad3096a07966b53c
Author: Maya Rashish <maya@NetBSD.org>
Date: Sun Feb 24 23:36:09 2019 +0200

Avoid left-shifting a negative, for clang

commit 84881d47e674b93b79f405326b3ae43af53fe611
Author: Maya Rashish <maya@NetBSD.org>
Date: Sun Feb 24 21:30:43 2019 +0200

avoid conflict with netbsd bswap32

commit d9bd43728cb5cf161d8501be6d53dee50f094df0
Author: Maya Rashish <maya@NetBSD.org>
Date: Sun Feb 24 21:30:30 2019 +0200

cast enum to appease clang

commit a84ec26c89d08028800e74313ccbbf0a1a0753ed
Author: Maya Rashish <maya@NetBSD.org>
Date: Wed Feb 6 13:07:55 2019 +0200

Apply patches from pkgsrc mesa to avoid atexit on a library.

This isn't safe to do on netbsd and results in segfaults on
program exit.

commit 335ea9c725374db31fe809a7d7f33ad8a83edd3e
Author: Maya Rashish <maya@NetBSD.org>
Date: Sat Jan 19 16:32:28 2019 +0200

Avoid left-shifting a negative (UB), appeases clang

commit 452e5dc79ee89292fe771cf0e1066d1fad55adfa
Author: Maya Rashish <maya@NetBSD.org>
Date: Sat Jan 12 17:02:04 2019 +0200

radeon picture_type is h264 and the enums match, cast to avoid

clang warning (we use -Werror)

commit 61b4bc2f7ca8d78bd4092df76daeb27621d2ea7d
Author: Maya Rashish <maya@NetBSD.org>
Date: Fri Jan 11 19:57:34 2019 +0200

Avoid redefinition, for clang.

commit c73fac417444cd79ee5a7a89b4a0fdf931e5122d
Author: Maya Rashish <maya@NetBSD.org>
Date: Sun Jan 6 19:52:12 2019 +0200

Fix some printf specifiers.

XXX more upstreaming
radeon_dma.c: https://gitlab.freedesktop.org/mesa/mesa/merge_requests/68

commit 09341f929e9d3b03a3caacaa630521bc76680344
Author: Maya Rashish <maya@NetBSD.org>
Date: Sat Feb 23 11:51:50 2019 +0200

Replace atexit() calls by destructor attributes - this shared library
is dlopen/dlclose'd !

add forward declaration for yylex.

merge Mesa 10.3.5.

initial import of MesaLib-10.3.5

Remove bogus self-assigned loop field. From upstream.

Add pre-generated builtin_function.cpp.

Normally this is created by the Mesa build process by running a
Python program, but we don't have that vice^Wluxury here, so we'll
make do with a pre-generated version. This file is going away in a
later Mesa version anyway...

Use __attribute__((__destructor__)), not atexit, in shared objects.

merge MesaLib 7.11.2

import MesaLib 7.11.2

Brings in support for Intel Sandy Bridge and Ivy Bridge hardware, a
new shader language compiler, and various other improvements too
numerous to list here; see <http://www.mesa3d.org/relnotes.html> for
details.

import Mesa 7.8.2, lib part. major changes since 7.7.1:
- several new extensions for various drivers
- many i965, i915 driver fixes
- many glsl fixes