Support progress trail for certain splash screen periods

git-svn-id: http://svn.slightlymagic.net/forge/trunk@26052 269b9781-a132-4a9b-9d4e-f004f1b56b58
Code cleanup

git-svn-id: http://svn.slightlymagic.net/forge/trunk@26053 269b9781-a132-4a9b-9d4e-f004f1b56b58