Git commits in Moodle 1.6.4 by mchurch

commit dcd74d318f011549dfb77c9dc72618a64f915983
Author: mchurch <mchurch>
Date:   Wed, 17 Jan 2007 06:33:11 +0900
Tag:    v1.6.4

Fixing bug where quizzes from 1.4 will lose their answers when upgraded to later versions. Fixes MDL-8207.