Network version 23

#154 keeps blocks of a Custom Edition map that version 22 cut to the Xbox
tools' limits (scenario vehicles, animations, seats), so a host and a client
of the two versions would place different objects on such a map; #155's map
version check also only guards clients that have it.

port/linux/include/halo_port_limits.h

@@ -66,7 +66,7 @@ is newer (network_client_manager.c). A host advertises it, with its netcode,
 in its game's advertisement's reserved bytes (network_server_message_handler.c),
 which hosts built before there was a version send as zeros: version 0.
 Raise it with any change to what the machines send each other. */
-#define HALO_PORT_NETWORK_VERSION 22
+#define HALO_PORT_NETWORK_VERSION 23
 /* ... the advertisement's reserved bytes: the version (a little-endian word),
 then flags */
 #define HALO_PORT_ADVERTISED_VERSION_OFFSET 0