Git commits in Moodle 1.7.1 by mchurch

commit 8b4a8f616f97becd77c29f2f5b8129cf3d3fbb81
Author: mchurch <mchurch>
Date:   Wed, 17 Jan 2007 06:31:14 +0900
Tag:    v1.7.1

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