Fix an issue that can occur when you do an attended transfer to parking. If

you complete the transfer before the announcement of the parking spot finishes,
then the channel being parked will hear the remainder of the announcement.
These changes make it so that will not happen anymore.

Basically, res_features sets a flag on the channel is playing the announcement
to so that the file streaming core knows that it needs to watch out for a
channel masquerade, and if it occurs, to abort the announcement.

(closes BE-182)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@81599 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/channel.h

@@ -478,6 +478,9 @@ enum {
 	/*! This is set to tell the channel not to generate DTMF begin frames, and
 	 *  to instead only generate END frames. */
 	AST_FLAG_END_DTMF_ONLY = (1 << 14),
+	/*! This flag indicates that on a masquerade, an active stream should not
+	 *  be carried over */
+	AST_FLAG_MASQ_NOSTREAM = (1 << 15),
 };
 
 /*! \brief ast_bridge_config flags */