codeintel: python: include keywords in the 2-char completions
http://bugs.activestate.com/show_bug.cgi?id=59937
* tries to be smart about where/which keywords are shown

(integrated from komodo (trunk) change 81435 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13450 b87d16e7-d29f-4ee1-b5ec-817d645d335f