codeintel: ci2: make scan more robust, better when scanning recursively

(integrated from komodo (trunk) change 84416 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@14300 b87d16e7-d29f-4ee1-b5ec-817d645d335f
memutils: add a help method to summarise object usage by child properties

(integrated from komodo (trunk) change 84417 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@14301 b87d16e7-d29f-4ee1-b5ec-817d645d335f