fix: Python 3: Allow 2-char local symbol completions in Python 3
http://bugs.activestate.com/show_bug.cgi?id=100031

(integrated from komodo (trunk) change 81374 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13414 b87d16e7-d29f-4ee1-b5ec-817d645d335f