Q2 servers were stealing all chat text. 'sv ' is the only prefix allowed to get q2 commands executing.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@59 fc73d0e0-1445-4013-8a0c-d673dee63da5

engine/server/pr_cmds.c

@@ -1151,9 +1151,13 @@ qboolean PR_ConsoleCmd(void)
 	extern redirect_t sv_redirected;
 #ifdef Q2SERVER
 	if (ge)
-	{
-		ge->ServerCommand();
-		return true;	//the dll will convert in to chat.
+	{	//server command
+		if (!strcmp(Cmd_Argv(0), "sv"))
+		{
+			ge->ServerCommand();
+			return true;
+		}
+		return false;
 	}
 #endif