Merged with Tobias

Automated merge with http://prosody.im/source/hg

Add NODEprepping to SASL Digest-MD5 authentication handling.

MUC: Fixed traceback on unauthorized access of the room configuration form.

MUC: Added service discovery replies for rooms.

MUC: Fixed an undefined global access.

MUC: Added support for room configuration forms, persistence and hidden rooms.

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mercurial