prosody: update to 0.9.10, switch to procd init script
Update to 0.9.10 due to https://prosody.im/issues/issue/585
The init script seems to block, as "prosodyctl start" started to block
at least on my configuration. I switched to a procd init script, which
deals with blocking processes.
Signed-off-by: Stefan Hellermann <stefan@the2masters.de>