Merge remote branch 'smgfs/master'

Conflicts:
	build/modules.conf.in
	configure.in
	libs/esl/fs_cli.c
	libs/freetdm/mod_freetdm/mod_freetdm.c
	libs/freetdm/src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn.h
	libs/freetdm/src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_cfg.c
	libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_logger.c
	libs/freetdm/src/ftmod/ftmod_sangoma_ss7/ftmod_sangoma_ss7_support.c
	src/include/switch_types.h
	src/mod/applications/mod_commands/mod_commands.c
	src/mod/applications/mod_spandsp/mod_spandsp.c
	src/mod/endpoints/mod_opal/mod_opal.cpp
	src/mod/endpoints/mod_opal/mod_opal.h
	src/mod/endpoints/mod_sofia/mod_sofia.h
	src/mod/endpoints/mod_sofia/rtp.c
	src/switch.c
	src/switch_core.c
	src/switch_rtp.c

FTDM_SIGEVENT_UP was falling through to FTDM_SIGEVENT_PROGRESS_MEDIA, which
does (almost) the same, so no harm, but still fix it.
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

No functional changes.
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

Channels can be in DOWN state but reserved by an incoming call
(FTDM_CHANNEL_INUSE flag). Additionally check the flag in on_timeout_t3xx()
and skip those channels.

Reported-by: privi #freetdm @ irc.freenode.net
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

1)resetting term->u.rtp.rfc2833 , if ADD/MODIFY SDP does not have rfc2833
2) calling DTMF removal from modify request also depends on rfc2833 present in sdp or not
3) calling EC disable from ADD/MODIFY api handler if sdp contains T38

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