Git commits in Moodle 1.9.7 by Penelope Leach

commit 38e7721a31b131d6cadeaa94cbafa2e5aca5e8e8
Author: Penelope Leach <penny@catalyst.net.nz>
Date:   Mon, 09 Nov 2009 21:05:37 +0800
Tag:    v1.9.7

MDL-20596 - fixes to backup_course_silently and import_backup_file_silently