ocfs2: Hang the locking proto on the cluster conn and use it in asts.

With the ocfs2_cluster_connection hanging off of the ocfs2_dlm_lksb, we
have access to it in the ast and bast wrapper functions.  Attach the
ocfs2_locking_protocol to the conn.

Now, instead of refering to a static variable for ast/bast pointers, the
wrappers can look at the connection.  This means different connections
can have different ast/bast pointers, and it reduces the need for the
static pointer.

Signed-off-by: Joel Becker <joel.becker@oracle.com>

fs/ocfs2/stackglue.c

@@ -343,6 +343,7 @@ int ocfs2_cluster_connect(const char *stack_name,
 	new_conn->cc_recovery_handler = recovery_handler;
 	new_conn->cc_recovery_data = recovery_data;
 
+	new_conn->cc_proto = lproto;
 	/* Start the new connection at our maximum compatibility level */
 	new_conn->cc_version = lproto->lp_max_version;