Git commits in Moodle 2.1.0 by Aaron Wells

commit 4b72f9eb78157324efaa87a2f55c27206c0eee34
Author: Aaron Wells <aaronw@catalyst.net.nz>
Date:   Tue, 12 Apr 2011 10:30:13 +0800
Tag:    v2.1.0

MDL-26167 lib/form: Altering Javascript so that "disabledIf" will disable the "Choose" button for a filepicker