Git commits in Moodle 2.2.0 by Kyle Temkin

commit aecb339307580896130b932900f0c56b8b000398
Author: Kyle Temkin <ktemkin@binghamton.edu>
Date:   Thu, 22 Sep 2011 19:11:49 +0800
Tag:    v2.2.0-beta

MDL-28202 qtype_calculated fix edge case in the rounding code.