Fixed #8248: made help() work on models and improved introspection support.
Fixed #8248: made help() work on models and improved introspection support.

Descriptors now return themselves when accessed via the class, as per standard
Python descriptors like property().



git-svn-id: 4f9f921b081c523744c7bf24d959a0db39629563@9550 bcc190cf-cafb-0310-a4f2-bffc1f526a37

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