Network version 24

#173's PC vehicle set is a new vehicle set value the host sends with the
gametype, and every machine places the map's vehicles by it: a client of
version 23 would place none of a set it does not know while the host places
them all.

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 23
+#define HALO_PORT_NETWORK_VERSION 24
 /* ... the advertisement's reserved bytes: the version (a little-endian word),
 then flags */
 #define HALO_PORT_ADVERTISED_VERSION_OFFSET 0