Issue #2387085: fixed multichoice row highlighting, and fixed across multiple mcqs on a page.
Removing some legacy code/comments, an update hook from multihoice -> 6.4 which we will never be running in 7.
Issue #2335867 by djdevin: assert that we cannot get here without a result.
Merge pull request #29 from atdrupal/merge5x

Merge5x