SDK-16117 - HTML Wrapper doesn't work with player 10 installations
* Some beta players return their revision as "b###" -- the "b" case was not handled by AC_OETags.js
* I cannot test this locally but it's conservatively safe: I added an IF statement which checks if the revision starts with a "b". I may have missed some other permutation of the revision, but this should suffice for people with "b" builds.
QA: Please test that the HTML wrapper works for player 10 beta 2; it may not exercise the bug, but this player is all that matters.