Merged latest FreeTDM code from Sangoma's repo

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

libs/freetdm/src/include/private/ftdm_core.h

@@ -126,6 +126,9 @@
 extern "C" {
 #endif
 
+#define SPAN_PENDING_CHANS_QUEUE_SIZE 1000
+#define SPAN_PENDING_SIGNALS_QUEUE_SIZE 1000
+
 #define GOTO_STATUS(label,st) status = st; goto label ;
 
 #define ftdm_copy_string(x,y,z) strncpy(x, y, z - 1) 
@@ -473,6 +476,7 @@ struct ftdm_channel {
 	int32_t txdrops;
 	int32_t rxdrops;
 	ftdm_usrmsg_t *usrmsg;
+	ftdm_time_t last_state_change_time;
 };
 
 struct ftdm_span {
@@ -690,6 +694,9 @@ FT_DECLARE(ftdm_status_t) ftdm_sigmsg_remove_var(ftdm_sigmsg_t *sigmsg, const ch
  */
 FT_DECLARE(ftdm_status_t) ftdm_sigmsg_set_raw_data(ftdm_sigmsg_t *sigmsg, void *data, ftdm_size_t datalen);
 
+/*! \brief Retrieve a span and channel data structure from a string in the format 'span_id:chan_id'*/
+FT_DECLARE(ftdm_status_t) ftdm_get_channel_from_string(const char *string_id, ftdm_span_t **out_span, ftdm_channel_t **out_channel);
+
 /*!
   \brief Assert condition
 */

libs/freetdm/src/include/private/ftdm_types.h

@@ -162,6 +162,7 @@ typedef enum {
 	FTDM_SIGTYPE_ANALOG,
 	FTDM_SIGTYPE_SANGOMABOOST,
 	FTDM_SIGTYPE_M3UA,
+	FTDM_SIGTYPE_M2UA,
 	FTDM_SIGTYPE_R2,
 	FTDM_SIGTYPE_SS7,
 	FTDM_SIGTYPE_GSM
@@ -198,6 +199,8 @@ typedef enum {
 	FTDM_SPAN_NON_STOPPABLE = (1 << 13),
 	/* If this flag is set, then this span supports TRANSFER state */
 	FTDM_SPAN_USE_TRANSFER = (1 << 14),
+	/* This is the last flag, no more flags bigger than this */
+	FTDM_SPAN_MAX_FLAG = (1 << 15),
 } ftdm_span_flag_t;
 
 /*! \brief Channel supported features */
@@ -266,6 +269,12 @@ typedef enum {
 #define FTDM_CHANNEL_BLOCKING        (1ULL << 35)
 /*!< Media is digital */
 #define FTDM_CHANNEL_DIGITAL_MEDIA   (1ULL << 36)
+/*!< Native signaling bridge is enabled */
+#define FTDM_CHANNEL_NATIVE_SIGBRIDGE (1ULL << 37)
+
+/*!< This no more flags after this flag */
+#define FTDM_CHANNEL_MAX_FLAG 	     (1ULL << 38)
+/*!<When adding a new flag, need to update ftdm_io.c:channel_flag_strs */
 
 #include "ftdm_state.h"