upgpkg: lightdm 1:1.10.1-2

Add greeters to optdepends


git-svn-id: file:///srv/repos/svn-community/svn@112450 9fca08f4-af9d-4005-b8df-a31f2cc04f65
archrelease: copy trunk to community-i686, community-x86_64

git-svn-id: file:///srv/repos/svn-community/svn@112451 9fca08f4-af9d-4005-b8df-a31f2cc04f65