upgpkg: mesa 10.2.6-2

LLVM 3.5 rebuild.

git-svn-id: file:///srv/repos/svn-packages/svn@221022 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to staging-i686, staging-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@221023 eb2447ed-0c53-47e4-bac8-5bc4a241df78