- Switch master server protocol to dpmaster for better game separation. Based partly on patch by Zack Middleton

- Get rid of ugly cvars sv_heartbeat and cl_gamename and replace with single com_gamename
- Remove sv_flatline. Flatlines are ignored by dpmaster and are considered to be insecure because flatlines can be udp-spoofed.

code/server/sv_init.c

@@ -686,8 +686,6 @@ void SV_Init (void)
 	sv_strictAuth = Cvar_Get ("sv_strictAuth", "1", CVAR_ARCHIVE );
 #endif
 	sv_banFile = Cvar_Get("sv_banFile", "serverbans.dat", CVAR_ARCHIVE);
-	sv_heartbeat = Cvar_Get("sv_heartbeat", HEARTBEAT_FOR_MASTER, CVAR_INIT);
-	sv_flatline = Cvar_Get("sv_flatline", FLATLINE_FOR_MASTER, CVAR_INIT);
 
 	// initialize bot cvars so they are listed and can be set before loading the botlib
 	SV_BotInitCvars();