Git commits in Moodle 1.7.5 by pichetp

commit b6630ed3dccee28ba23c1044d703d3c95f3672f8
Author: pichetp <pichetp>
Date:   Tue, 11 Mar 2008 06:51:37 +0900
Tag:    v1.7.5

MDL-12503 Loguniform  merging from head