Make most of MesaLib build.

Define GL_LIB_NAME somewhere that applies to dri_common.c, which is the
file that needs it.

Define HAVE_LIBDRM (required for loader_get_pci_id_for_fd)

Update build logic for mesa 19.1.7.

A lot of files are now living outside of dist, since they're not in the
distributed sources: they're generated, usually by python/meson.

The remaining changes ar

Update build logic for mesa 19.1.7.

A lot of files are now living outside of dist, since they're not in the
distributed sources: they're generated, usually by python/meson.

The remaining changes are due to files being moved around.

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pull across most of the new build infrastruture for mesa18 from maya's
git tree. this includes may of the changes from the changes below:


commit 52d85e74a1197aace38cc7acb705509e969120e6
Author: co

pull across most of the new build infrastruture for mesa18 from maya's
git tree. this includes may of the changes from the changes below:


commit 52d85e74a1197aace38cc7acb705509e969120e6
Author: coypu <coypu@sdf.org>
Date: Mon Mar 4 12:25:33 2019 +0200

Make 32bit archs happier.

except i386, which now suffers from locked atomics because we
don't have clever ifunc tricks in libc.

commit ee9b4c19c58127934ed3548ad0d68934cc95ccc7
Author: coypu <coypu@sdf.org>
Date: Mon Mar 4 09:08:35 2019 +0200

Adjust includes, append rather than replace, appease clang ppc builds

commit a5341a3ad42572c78b6a2e6e5545bd323d7f2e4c
Author: coypu <coypu@sdf.org>
Date: Sun Mar 3 11:52:19 2019 +0200

Resolve i386 atomic issue and set lists.

XXX libGL in i386 is still causing issues
XXX pkgconfig file for vdpau
XXX set lists for arm32

commit 27bffc20bc15186c92cc5b8d5cc08d7299966b34
Author: coypu <coypu@sdf.org>
Date: Sat Mar 2 21:52:45 2019 +0200

make llvm sources x86 specific

hopefully not breaking non-x86 clang builds, which
have MKLLVM set.

commit f9d34922619cc8f2a224c0138a73985e50daf87f
Author: coypu <coypu@sdf.org>
Date: Sat Mar 2 21:33:31 2019 +0200

move hack to build llvm libraries soon enough.

add u_process.c to libGL specifically (dri, gallium and libGL all need
it).

Add some missing includes for pipe-loader when it moved to gallium

commit 2b1083d0d538bb5d5dd88ab2ca0ca6c331e5dd5b
Author: coypu <coypu@sdf.org>
Date: Sat Mar 2 16:47:58 2019 +0200

shuffle around:

some files move from shared driver.mk/loader.mk into gallium.
others move to shared.

add i915 files.

now i965 glxgears works (amd64).

commit 1897a90569b30b294bcbedadb3745092eca0bb33
Author: Maya Rashish <maya@NetBSD.org>
Date: Sun Feb 24 23:36:26 2019 +0200

Progress towards glxgears on i915

commit 28c9c99a236404de41ae74e88ea6d9578c088b92
Author: Maya Rashish <maya@NetBSD.org>
Date: Sun Feb 24 21:55:56 2019 +0200

rototill i965/i915 causing it to no longer startx.

Now missing sw_screen_create in the dri driver.

commit 48eb746983a5a7967fba221e7b167808af36f44a
Author: Maya Rashish <maya@NetBSD.org>
Date: Sun Feb 24 09:31:22 2019 +0200

More of vdpau. Cogs spin.

commit d9fbba8f61a43648d32f160c5fa62626788566ff
Author: Maya Rashish <maya@NetBSD.org>
Date: Sat Feb 23 22:36:37 2019 +0200

Adjust for MesaLib 18.

Build llvmpipe driver on x86 (the driver itself is x86-only).
build llvm on all x86, even on GCC builds.
galahad driver removed (upstream).
Don't build mesa 7 at all.

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move mesa10 build into .old scheme:

- add ${X11SRCDIR.MesaLib.old} and introduce ${X11SRCDIR.Mesa} as an
alias for either the former or the non old. this allows many of
the makefiles to simply

move mesa10 build into .old scheme:

- add ${X11SRCDIR.MesaLib.old} and introduce ${X11SRCDIR.Mesa} as an
alias for either the former or the non old. this allows many of
the makefiles to simply use ${X11SRCDIR.Mesa} (but does not really
enable much sharing of makefiles, but reduces their diffs.)

- use mesa-which.mk to define ${OLD_PREFIX} to either "" or ".old",
and to know if to build 'dri7' (.old only.) ${OLD_PREFIX} is used
by other code (eg, LIBDPLIBS) to pick the right subdir.

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update sets and reachover makefiles for mesa 10.3.5.