If the GCTrace patch is the only known outstanding issue, then I suggest we make the release without incorporating it, but include the patch (unapplied as a patch file) in the release (etc directory? with note in release notes about where to find it).  It is pretty small, but touches a couple core MMTk files so if we did apply it we'd need to wait for another regression test cycle to make the release..  I'll then apply the patch after the release is made.

--dave