Use a different fix for the problem with the start arg in _me_find/_me_rfind.
Use a different fix for the problem with the start arg in _me_find/_me_rfind.

We can't access the orginal length of the string, so normalize the start
argument at the beginning.

doerwalter/LivingLogic.Javascript.ul4,LivingLogic/LivingLogic.Javascript.ul4,doerwalter/LivingLogic.Javascript.ul4,LivingLogic/LivingLogic.Javascript.ul4