clover: Don't use PIPE_TRANSFER_UNSYNCHRONIZED for blocking copies

CC: "9.2" <mesa-stable@lists.freedesktop.org>

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
(cherry picked from commit f3e86d4a68c27f0e86d64a98469a48756c445498)
Fixed and/or order mistake, resulting in compiling llvmpipe without llvm installed

Cc: 9.2 <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68544
Reviewed-by: Matt Turner <mattst88@gmail.com>
(cherry picked from commit cec7b5c5bc300d4a415939bc6a913d441c687e47)
glsl: Disallow uniform block layout qualifiers on non-uniform block vars.

Cc: 9.2 <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68460
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
docs: Update release notes for 9.2

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
mesa: Bump version to 9.2 (final)

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
docs: Add 9.2 release md5sums

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
docs: minor fixes for 9.2 release notes

Fix incorrect </li> tag, fix language.