Add better handling of time values when the times aren't defined. Fix formatting of the config values for two config values.

add chan vars to tell sip to break the rfc and expect the codec payload the other side replies with rather than the one it offered which is the correct behaviour

add uuid_media_reneg api command to tell a channel to send a re-invite with optional list of new codecs

Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

List is sorted in ascending order of expiration time,
fix the if clause in lpwrap_start_timer().
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

fix logic in dmachine parser for overlap bindings so they work regardless of the order they are bound

TIFF/FX spec says, even though no software seems to care.