Implementation of shared buffer level in the gwbuf so that one set of data can be kept with

different offsets for different gwbufs

Updated monitor to better handle maste/slave replication environments

Split MASTER and SERVER bits in the erver bitmask so that we canhave more states, MASTER, SLAVE and NOT IN REPLICATION

Updates to the read write splitter for routing commands to all nodes, diagnostic output and fixes to the algorithm to pick up a master and slave connection

modules/routing/debugcmd.c

@@ -345,6 +345,7 @@ static struct {
 } ServerBits[] = {
 	{ "running", 	SERVER_RUNNING },
 	{ "master",	SERVER_MASTER },
+	{ "slave",	SERVER_SLAVE },
 	{ NULL,		0 }
 };
 /**