Developer credits

Git commits in Moodle x.x.x by Roger Moore

commit 537114c6cce43ab222c65ccc6fe784ee9bd69f86
Author: Roger Moore <rwmoore@ualberta.ca>
Date:   Tue, 01 Nov 2011 01:52:30 +0800
Tag:    v2.0.6

MDL-28426 question export should write answer and feedback format to the file.