upgpkg: gnome-system-monitor 3.12.2-1

Rebuild for libgtop-2.30.0 so bump


git-svn-id: file:///srv/repos/svn-packages/svn@213320 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to staging-i686, staging-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@213321 eb2447ed-0c53-47e4-bac8-5bc4a241df78