Author: Tim Hunt
MDL-27410 Big cleanup of the coding style in qtype_calculated.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=f184c65cda40f2a628135e3f41ab5aff4775ce8f
http://github.com/moodle/moodle/commit/f184c65cda40f2a628135e3f41ab5aff4775ce8f
+ 2.1 en [hexanotallowed,qtype_calculated]