Modify Tooltip to respond to focus events that occur inside of the anchor node.  Fixes #7760 !strict
Modify Tooltip to respond to focus events that occur inside of the anchor node.  Fixes #7760 !strict

Also fixing bug with removing focusin/focusout listeners, exposed by Tooltip_a11y.html test after above change, fixes #14595 !strict.   Seems like removing focusin/focusout listeners should be part of dijit/tests/on.html but there's not much point at the moment, because for some reason the focus tests in that file are commented out.

git-svn-id: 674a2d6b1e32e53f607eb824547723f32280967e@27526 560b804f-0ae3-0310-86f3-f6aa0a117693

kitsonk/delite,harbalk/delite,Sam-Cummins/delite,Sam-Cummins/delite,kitsonk/delite,harbalk/delite