Merge pull request #265 from JMerrill/master

Link in comment now points to most recent copy from archive.org

Author: forki

src/FSharpx.Core/Stm.fs

@@ -12,7 +12,7 @@
  *)
 
 /// <summary>The Software Transactional Memory monad.</summary>
-/// <see href="http://cs.hubfs.net/blogs/hell_is_other_languages/archive/2008/01/16/4565.aspx" />
+/// <see href="http://web.archive.org/web/20110926161739/http://cs.hubfs.net/blogs/hell_is_other_languages/archive/2008/01/16/4565.aspx" />
 module FSharpx.Stm
 
 [<AutoOpen>]
@@ -431,4 +431,4 @@ module ListQueue =
         let head, last = List.foldBack f list (Nil, Nil)
         { head = newTVar head; last = newTVar last }
 
-    
+