anchor.diff:  ;;; ===========================================================================
   ;;;  Features & warnings
   
  -#+(or (and clisp (not mt))
  +#+(or abcl             ;; temporarily without thread support--very temporarily
  +      (and clisp (not mt))
         cormanlisp
         (and cmu (not mp)) 
         (and ecl (not threads))
  
positive.code: ;;;; -*- Mode:Common-Lisp; Package:PORTABLE-THREADS; Syntax:common-lisp -*-
  ;;;; *-* File: /usr/local/gbbopen/source/tools/portable-threads.lisp *-*
  ;;;; *-* Edited-By: cork *-*
  ;;;; *-* Last-Edit: Wed Jun  2 14:01:21 2010 *-*
  ;;;; *-* Machine: cyclone.cs.umass.edu *-*
  
  ;;;; **************************************************************************
  
negative.code: 
  (eval-when (:compile-toplevel :load-toplevel :execute)
    (import
     #+abcl
     '()
     #+allegro 
     '(sys:with-timeout)
     #+clisp
  