Refactoring: Make sure undo (and other operations that end multi-caret editing sessions) don't corrupt the undo-stack.
http://bugs.activestate.com/show_bug.cgi?id=100837
r=marky
rn=

(integrated from komodo (trunk) change 82717 by ericp)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13871 b87d16e7-d29f-4ee1-b5ec-817d645d335f