(svn r1090) -Fix: Made the _openttd_revision variable global, and with that

hopefully killed the windows-revision problem. If WITH_REV is defined, 
for both Windows as *nix system _openttd_revision is filled with normal 
info, else _openttd_revision is set to 'norev000'
-Fix: Small possible server-crash

network.c

@@ -785,16 +785,6 @@ bool NetworkClientConnectGame(const byte* host, unsigned short port)
 
 void NetworkInitGameInfo(void)
 {
-#ifdef WITH_REV_HACK
-	#define WITH_REV
-	const char _openttd_revision[] = WITH_REV_HACK;
-#else
-	#if defined(WITH_REV)
-		extern char _openttd_revision[];
-	#else
-		const char _openttd_revision[] = "norev000";
-	#endif
-#endif
 	NetworkClientInfo *ci;
 
 	ttd_strlcpy(_network_game_info.server_name, _network_server_name, sizeof(_network_game_info.server_name));