(svn r2583) Move OS specific code out of misc.c

Added support for Mersenne Twister random number generator (not implemented in network yet)
Wrap player randoms around #ifdef

network.c

@@ -773,7 +773,9 @@ static void NetworkInitialize(void)
 
 	_network_reconnect = 0;
 
+#ifdef PLAYER_SEED_RANDOM
 	InitPlayerRandoms();
+#endif
 
 	NetworkUDPInitialize();
 }