Update docs and patchlevel for 3.6.0 final.

Doc/whatsnew/3.6.rst

@@ -47,6 +47,9 @@
    when researching a change.
 
 This article explains the new features in Python 3.6, compared to 3.5.
+Python 3.6 was released on December 23, 2016.  See the
+`changelog <https://docs.python.org/3.6/whatsnew/changelog.html>`_ for a full
+list of changes.
 
 .. seealso::
 

Include/patchlevel.h

@@ -19,11 +19,11 @@
 #define PY_MAJOR_VERSION	3
 #define PY_MINOR_VERSION	6
 #define PY_MICRO_VERSION	0
-#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_GAMMA
-#define PY_RELEASE_SERIAL	2
+#define PY_RELEASE_LEVEL	PY_RELEASE_LEVEL_FINAL
+#define PY_RELEASE_SERIAL	0
 
 /* Version as a string */
-#define PY_VERSION      	"3.6.0rc2"
+#define PY_VERSION      	"3.6.0"
 /*--end constants--*/
 
 /* Version as a single 4-byte hex number, e.g. 0x010502B2 == 1.5.2b2.

README

-This is Python version 3.6.0 release candidate 2
-================================================
+This is Python version 3.6.0
+============================
 
 Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
 2012, 2013, 2014, 2015, 2016 Python Software Foundation.  All rights reserved.
@@ -170,8 +170,8 @@ same prefix you must decide which version (if any) is your "primary" version.
 Install that version using "make install".  Install all other versions using
 "make altinstall".
 
-For example, if you want to install Python 2.6, 2.7 and 3.6 with 2.7 being the
-primary version, you would execute "make install" in your 2.7 build directory
+For example, if you want to install Python 2.7, 3.5, and 3.6 with 3.6 being the
+primary version, you would execute "make install" in your 3.6 build directory
 and "make altinstall" in the others.