waylandloginmanager: openvt -w  now appears to work for the loginmanagerdisplay, so detection hack is no longer needed, which might have been causing a race condition, as now openvt will wait until the the next time the loginmanagerdisplay goes down

git-svn-id: https://rebeccablackos.svn.sourceforge.net/svnroot/rebeccablackos@2948 56e3d1a8-0179-4092-b3e2-9fbbcda0c0a9