Fixed another problem where we were creating a class twice via two import paths. Self-referential relations (e.g. ForeignKey('self')) were still slipping through the net. Refs #1796.
Fixed another problem where we were creating a class twice via two import
paths. Self-referential relations (e.g. ForeignKey('self')) were still slipping
through the net. Refs #1796.


git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@3279 bcc190cf-cafb-0310-a4f2-bffc1f526a37

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