Git commits in Moodle 1.7.3 by sam_marshall

commit 404d380856998ea911260d932d3f49e3513a9a8e
Author: sam_marshall <sam_marshall>
Date:   Mon, 21 May 2007 20:02:24 +0800
Tag:    v1.7.3

MDL-8227 Merged wiki locking fix