Move headers from server/include to include/maxscale

- Headers now to be included as <maxscale/xyz.h>
- First step, no cleanup of headers has been made. Only moving
  from one place to another + necessary modifications.

server/modules/routing/readconnroute/readconnroute.c

@@ -74,23 +74,23 @@
 #include <string.h>
 #include <signal.h>
 #include <maxscale/alloc.h>
-#include <service.h>
-#include <server.h>
-#include <router.h>
-#include <atomic.h>
-#include <spinlock.h>
+#include <maxscale/service.h>
+#include <maxscale/server.h>
+#include <maxscale/router.h>
+#include <maxscale/atomic.h>
+#include <maxscale/spinlock.h>
 #include <readconnection.h>
-#include <dcb.h>
-#include <spinlock.h>
-#include <modinfo.h>
+#include <maxscale/dcb.h>
+#include <maxscale/spinlock.h>
+#include <maxscale/modinfo.h>
 
-#include <skygw_types.h>
-#include <skygw_utils.h>
-#include <log_manager.h>
+#include <maxscale/skygw_types.h>
+#include <maxscale/skygw_utils.h>
+#include <maxscale/log_manager.h>
 
 #include <mysql_client_server_protocol.h>
 
-#include "modutil.h"
+#include <maxscale/modutil.h>
 
 MODULE_INFO info =
 {