upgpkg: xorg-server 1.16.0-3

implement FS#41256 and FS#41259, add an upstream fix and an install post-upgrade message

git-svn-id: file:///srv/repos/svn-packages/svn@217822 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to testing-i686, testing-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@217823 eb2447ed-0c53-47e4-bac8-5bc4a241df78