Rename 'canreinvite' option to 'directmedia', with backwards compatibility.

It is clear from multiple mailing list, forum, wiki and other sorts of posts
that users don't really understand the effects that the 'canreinvite' config
option actually has, and that in some cases they think that setting it to 'no'
will actually cause various other features (T.38, MOH, etc.) to not work properly,
when in fact this is not the case. This patch changes the proper name of the
option to what it should have been from the beginning ('directmedia'), but
preserves backwards compatibility for existing configurations.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@210190 65c4cc65-6c06-0410-ace0-fbb531ad65f3

doc/chan_sip-perf-testing.txt

@@ -58,7 +58,7 @@ type=friend
 context=test11
 host=192.168.134.240 ;; the address of the host you will be running sipp on
 user=sipp
-canreinvite=no
+directmedia=no
 disallow=all
 allow=ulaw
 

doc/res_config_sqlite.txt

@@ -70,7 +70,7 @@ CREATE TABLE ast_sip (
 	callgroup	VARCHAR(10)			DEFAULT NULL,
 	callerid	VARCHAR(80)			DEFAULT NULL,
 	cancallforward	CHAR(3)				DEFAULT 'yes',
-	canreinvite	CHAR(3)				DEFAULT 'yes',
+	directmedia	CHAR(3)				DEFAULT 'yes',
 	context		VARCHAR(80)			DEFAULT NULL,
 	defaultip	VARCHAR(15)			DEFAULT NULL,
 	dtmfmode	VARCHAR(7)			DEFAULT NULL,

doc/tex/phoneprov.tex

@@ -146,7 +146,7 @@ threewaycalling = yes
 deletevoicemail = no
 autoprov = yes
 profile = polycom
-canreinvite = no
+directmedia = no
 nat = no
 fullname = User Two ; ${DISPLAY_NAME}
 secret = test ; ${SECRET}