Text Selection in IE

Currently (Unlike all other browsers) there is no way to select text
in draggable objects in internet explorer even if a handle is
provided.
I've created a patch that bring IE into line with all the other
browsers (behaviour wise) and reduces code by removing IE only code
paths.
See: http://dev.jqueryui.com/ticket/4773
The SVN patch is located there and this effects UI.Core