New scheduling code in kernel. Work in progress.

Round-robin within one priority queue works fine.
Ageing algorithm to be done.

kernel/system/do_newmap.c

@@ -42,7 +42,7 @@ message *m_ptr;			/* pointer to request message */
 #endif
   old_flags = rp->p_rts_flags;	/* save the previous value of the flags */
   rp->p_rts_flags &= ~NO_MAP;
-  if (old_flags != 0 && rp->p_rts_flags == 0) lock_ready(rp);
+  if (old_flags != 0 && rp->p_rts_flags == 0) lock_enqueue(rp);
 
   return(OK);
 }