Editor: Track changes: Apply Undo's
http://bugs.activestate.com/show_bug.cgi?id=102171
r=marky
sr=toddw
rn=

(integrated from komodo (trunk) change 84167 by ericp)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@14268 b87d16e7-d29f-4ee1-b5ec-817d645d335f