Host_Map_f: replace Q_strrchr and Q_strcmp with libc calls

Author: sezero

Quake/host_cmd.c

@@ -858,9 +858,9 @@ static void Host_Map_f (void)
 	svs.serverflags = 0;			// haven't completed an episode yet
 	q_strlcpy (name, Cmd_Argv(1), sizeof(name));
 	// remove (any) trailing ".bsp" from mapname -- S.A.
-	p = Q_strrchr(name, '.');
+	p = strrchr(name, '.');
 	if (p != NULL)
-		if (Q_strcmp(p, ".bsp") == 0)
+		if (strcmp(p, ".bsp") == 0)
 			*p = '\0';
 	SV_SpawnServer (name);
 	if (!sv.active)