Fixes #413.


Grrr.  Making Unity behave right through its undocumented implicit behaviors is such a battle.

In this case, nothing in the Unity Documentation for FocusControl mentioned the fact that it will have no effect if you try to call it within the first few passes of OnGui, and you have to wait until it's had a full cycle through all its initial calls before it will function properly.  I swear, stackexchange users document Unity better than Unity does.