upgpkg: sip 4.15.5-2

Forgot to update this

git-svn-id: file:///srv/repos/svn-packages/svn@208057 eb2447ed-0c53-47e4-bac8-5bc4a241df78
archrelease: copy trunk to staging-i686, staging-x86_64

git-svn-id: file:///srv/repos/svn-packages/svn@208058 eb2447ed-0c53-47e4-bac8-5bc4a241df78