Merge with trunk

MUC: Added MUC feature to the disco#info replies of rooms.

Merge with 0.5

net.dns: Respect commented nameserver entries in resolv.conf (thanks Remko)

mod_welcome: Change $user to $username in default welcome message (thanks to neustradamus for spotting)

Re-tagging 0.5.2

mod_httpserver: Configurable filesystem path to serve from

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mercurial