ODBC transaction support

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@177320 65c4cc65-6c06-0410-ace0-fbb531ad65f3

configs/res_odbc.conf.sample

@@ -47,6 +47,13 @@ username => oscar
 password => thegrouch
 pre-connect => yes
 sanitysql => select count(*) from systables
+; forcecommit => no            ; Default to committing uncommitted transactions?
+; isolation => read_committed  ; Isolation level; supported levels are:
+                               ; read_uncommitted, read_committed, repeatable_read,
+                               ; serializable.  Note that not all databases support
+                               ; all isolation levels (e.g. Postgres only supports
+                               ; repeatable_read and serializable).  See database
+                               ; documentation for further information.
 ;
 ; Many databases have a default of '\' to escape special characters.  MS SQL
 ; Server does not.