Notifications alerts by Adam Sjøgren (asjo@koldfront.dk)
Initialise chat buffer only once

Don't clobber local variables.  This is needed for OTR.
Fix closure data when retrying caps disco request

The closure data used in jabber-process-caps-modern was a three-element
list, while the one used in jabber-caps-try-next was a cons cell.  This
led to crashes in jabber-process-caps-info-error when there were more
than one contact with the same caps hash, all failing to respond.
Typo in filename fixed
Warn about incorrect return values in fsm-send-sync

Previously we would crash in destructuring-bind, but this produces
rather unhelpful error messages.  Better log it in *fsm-debug*, pointing
to the source of the error.