Correct documentation for the MeetMe x flag

The documentation for the x flag for MeetMe incorrectly described its
function as closing down the conference when the last marked user left.
It actually causes the users with that flag to leave the conference
when the last marked user exits. The functionality of this flag is not
changing.
........

Merged revisions 370985 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 370986 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@370987 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_meetme.c

@@ -189,7 +189,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 						<argument name="secs" required="true" />
 					</option>
 					<option name="x">
-						<para>Close the conference when last marked user exits</para>
+						<para>Leave the conference when the last marked user leaves.</para>
 					</option>
 					<option name="X">
 						<para>Allow user to exit the conference by entering a valid single digit
@@ -599,7 +599,7 @@ enum {
 	CONFFLAG_AGI = (1 << 7),
 	/*! Set to have music on hold when user is alone in conference */
 	CONFFLAG_MOH = (1 << 8),
-	/*! If set the MeetMe will return if all marked with this flag left */
+	/*! If set, the channel will leave the conference if all marked users leave */
 	CONFFLAG_MARKEDEXIT = (1 << 9),
 	/*! If set, the MeetMe will wait until a marked user enters */
 	CONFFLAG_WAITMARKED = (1 << 10),