Editor: Hang on to multi selections until either ESC is pressed or user clicks out
http://bugs.activestate.com/show_bug.cgi?id=99966

(integrated from komodo (trunk) change 81756 by ericp)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13582 b87d16e7-d29f-4ee1-b5ec-817d645d335f