(svn r12944) -Codechange: use rev.h instead of externs at many places

src/network/network_client.cpp

@@ -24,6 +24,7 @@
 #include "../player_func.h"
 #include "../player_base.h"
 #include "../player_gui.h"
+#include "../rev.h"
 
 #include "table/strings.h"
 
@@ -122,7 +123,6 @@ DEF_CLIENT_SEND_COMMAND(PACKET_CLIENT_JOIN)
 	//    String: Unique id to find the player back in server-listing
 	//
 
-	extern const char _openttd_revision[];
 	Packet *p;
 	_network_join_status = NETWORK_JOIN_STATUS_AUTHORIZING;
 	InvalidateWindow(WC_NETWORK_STATUS_WINDOW, 0);