freetdm: Added Analog E&M outbound call answer supervision

You must add answer-supervision=yes in your freetdm.conf.xml
         Also added dial-timeout parameter which was previously hard-coded

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

@@ -92,7 +92,7 @@
 			   !strcasecmp(expr, "true") ||		\
 			   !strcasecmp(expr, "enabled") ||	\
 			   !strcasecmp(expr, "active") ||	\
-			   atoi(expr))) ? 1 : 0
+			   atoi(expr))) ? FTDM_TRUE : FTDM_FALSE
 
 #ifdef WIN32_LEAN_AND_MEAN
 #include <winsock2.h>