- build with valgrind only on 64bit platforms

previous release or wait for Mesa 23.2.2.
Mesa 23.1 has a regression [1] that breaks Wine if the GPU does not
It's unlikely that there will be any side effects from that,
- meson option "-Ddri-drivers" has been removed; wasn't used any
subsystem seeing too many changes
* 2nd bug fix release: lots of patches for all over the tree,
- U_glx-fix-indirect-initialization-crash.patch
- removing again BuildRequires for x264 and x265 in case
/usr/include/dxguids/dxguids.h:70:1: internal compiler error:
- spefile: removed Release lines from libxatracker2,
- build against llvm15/clang15 on sle15-sp5/Leap 15.5
schedule. There's a lot here: nir, panfrost, gallium video,
zink.
* fixes and cleanups all over the tree
only relevant on these platforms
* lot of great featurres, including (since rc5) additional
- _constraints:
- use _multibuild
makes sense since Mesa 21.1.0
- U_meson-restore-private-requires-to-libdrm-in-dri.pc-f.patch
- fixed llvm/clang buildrequires for sle15-sp4/Leap 15.4
- no longer try to build classic non-Gallium OpenGL drivers
* d3d12 GLES3.1 (shader storage buffers, images, compute, indirect draw, draw params,
- no longer install libvulkan_lvp package (lavapipe=Software
- update to 21.3.4
* fixes Mesa-drivers build
biggest changes.
* fixes build on ppc64le (boo#1191569)