Remove built-in speaker support

The changes to amiga, mac and msdos builds are untested.

sys/mac/mactty.c

@@ -13,6 +13,7 @@
 #include "hack.h" /* to get flags */
 #include "mttypriv.h"
 #if !TARGET_API_MAC_CARBON
+#include <Sound.h>
 #include <Resources.h>
 #endif
 
@@ -324,6 +325,19 @@ do_set_port_font(tty_record *record)
     }
 }
 
+void
+tty_nhbell(void)
+{
+    Handle h = GetNamedResource('snd ', "\pNetHack Bell");
+
+    if (h) {
+        HLock(h);
+        SndPlay((SndChannelPtr) 0, (SndListHandle) h, 0);
+        ReleaseResource(h);
+    } else
+        SysBeep(30);
+}
+
 /*
  * Fill in some fields from some other fields that may have changed
  */