Added access authorization framework, added port to ACL 5. ACL 5

seems to need eval-when wrapped around certain defconstant forms when
used in the same file (maybe because of compiler-macros).

src/acl-locking.cl

@@ -0,0 +1,24 @@
+;;;; CLASH --- The Common Lisp Adaptable Simple HTTP server
+;;;; This is copyrighted software.  See documentation for terms.
+;;;; 
+;;;; acl-locking.cl --- Platform independent locking primitives
+;;;; 
+;;;; Checkout Tag: $Name$
+;;;; $Id$
+
+(in-package :CLASH)
+
+;;;; %File Description:
+;;;; 
+;;;; 
+;;;; 
+
+;;; Locking primitives for ACL
+
+(defmacro pop-atomically (place)
+  `(mp:without-scheduling
+    (pop ,place)))
+
+(defmacro push-atomically (value place)
+  `(mp:without-scheduling
+    (push ,value ,place)))