Add some links to the hash documentation, acknowledgements for the review,

fixed some errors.


[SVN r28427]

libs/functional

@@ -1 +1 @@
-Subproject commit 90b21239b4fc564fe463cf0921971b8a20816fe2
+Subproject commit a461b5b1c7c339f8c45e6e35e51790049af82145