Set focus.curNode when clicking non-disabled tabIndex=-1 element, fixes #17106 !strict.  Tested on IE8, IE10, chrome.

git-svn-id: http://svn.dojotoolkit.org/src/dijit/trunk@31423 560b804f-0ae3-0310-86f3-f6aa0a117693
(cherry picked from commit e458357856119a7a4e1e80c069ddbc1ada4c2021)