Show error when no MD5 lib available

Fix mod_legacyauth to not use old stanza_dispatch

Merge from waqas

Moved some code and removed unnecessary checks.

Presence fixes (again)

Merging more s2s

Partial s2s commit

s2s works! \o/ \o/ s2s

working incoming s2s \o/ s2s

working outgoing s2s \o/ s2s

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mercurial