codeintel: find the right buffer on scan complete to notify with.
http://bugs.activestate.com/show_bug.cgi?id=100297

On Windows, there can be case issues with the path; normalize for that.
Also, cause the notification to fire even if the scan was skipped - that's
fine, it still means we have the codeintel information.

(integrated from komodo (trunk) change 81902 by marky)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13619 b87d16e7-d29f-4ee1-b5ec-817d645d335f