graphics/mesa: Update to 22.3

[manu]

Summary

Release notes: https://lists.freedesktop.org/archives/mesa-announce/2022-November/000695.html
On top of the release notes it seems that Gallium XVMC is also removed, see
https://gitlab.freedesktop.org/mesa/mesa/-/commit/8cc766d8f7eac26b7c029a2fac1bdfdba4776c29 for
more info.

Sponsored by: Beckhoff Automation GmbH & Co. KG

Test Plan

Only build tested on amd64 for now.

[manu]

Address testport issues.

[manu]

Remove xvmc for gallium-xa too

[jbeich]

Did you stop bumping pinned LLVM_DEFAULT on updates? For example, lang/rust bundles llvm15 (see rustc -vV output) and rustcl upstream also recommends llvm15. WITH_LTO=1 (via Mk/Features/lto.mk) needs LLVM version in clang and rustc to match for ld.lld to successfully link objects (with LLVM bitcode) produced by both.

[manu]

In D37580#854567, @jbeich wrote:

Did you stop bumping pinned LLVM_DEFAULT on updates? For example, lang/rust bundles llvm15 (see rustc -vV output) and rustcl upstream also recommends llvm15. WITH_LTO=1 (via Mk/Features/lto.mk) needs LLVM version in clang and rustc to match for ld.lld to successfully link objects (with LLVM bitcode) produced by both.

Simply forgot to check, will update LLVM_DEFAULT on commit.

[manu]

Bump LLVM_DEFAULT to 15 so LTO works.

[jbeich]

Can you update devel/libclc to 15.* to keep LLVM bitcode in sync with libLLVM used by lang/clover? See attached patch for example: {F52560643}

[manu]

Update libclc to LLVM 15 too.

[manu]

In D37580#854815, @jbeich wrote:

Can you update devel/libclc to 15.* to keep LLVM bitcode in sync with libLLVM used by lang/clover? See attached patch for example: {F52560643}

Done, thanks for the reminder.

[diizzy]

devel/libclc/Makefile

16–17

Perhaps make use of the DISTVERSION variable instead?
$DISTVERSION:R and $DISTVERSION:R:R