Subject and type event headers were never used in chat_send(), remove them.
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

Do not include descriptions on socket shutdowns for failures since they probably will never get it anyway and its in a protected section of code

Can be used to maintain lists of numbers and query/modify them with api commands.

Example:
blacklist add <list> <number>
blacklist del <list> <number>
blacklist check <list> <number> (outputs true or false)

FS-3551 please update to this revision or greater and retest gathering the same logs with loglevel debug and global siptrace on

FS-3570 receive side, update libteletone to track duration so it is less likely to double detect and push api changes down to freetdm

         This avoids hanging up a device that is no longer attached to the session, in the
         weird situation where the FreeSWITCH core takes an awful lot of time (more than 3 seconds)
         to come around to acknowledge the SIGEVENT_STOP signal.

FS-3564 --resolve Fix build for mod_skypopen, problem occurs after latest changes for chat interface