Add a jshint exception in mf-oop.js

If John Resig can create functions within loops in this case then we
can too.

Requires a recent version of jshint (tested on 1.1.0).
Rule should only apply to this file so should not be in .jshintrc

Change-Id: I9e706f3feebfd00b4b67bc3e2891ccb5a2676928
Merge "Add a jshint exception in mf-oop.js"