Change the CREATE TABLE so that desposition would be a vartext (ANSWER, BUSY, etc)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1213 65c4cc65-6c06-0410-ace0-fbb531ad65f3

doc/cdr_mysql.txt

@@ -20,7 +20,7 @@ CREATE TABLE cdr (
   lastdata varchar(45) NOT NULL default '',
   duration int(11) NOT NULL default '0',
   billsec int(11) NOT NULL default '0',
-  disposition int(11) NOT NULL default '0',
+  disposition varchar(45) NOT NULL default '',
   amaflags int(11) NOT NULL default '0',
   accountcode varchar(45) NOT NULL default '',
   uniqueid varchar(45) NOT NULL default ''