Issue #28251: Improvements to help manuals on Windows.

diff --cc Doc/whatsnew/3.6.rst
index cabff600e2d2ce240041d27ec5222b1e2218239f,b3f797f06f3895b8892141b00c9029d195dfa3ef..7e4912d2416bc4c7fa66c3205b88e9c9d151a255
--- 1/Doc/whatsnew/3.6.rst
--- 2/Doc/whatsnew/3.6.rst
+++ b/Doc/whatsnew/3.6.rst
@@@ -47,7 -47,7 +47,8 @@@
  
  This article explains the new features in Python 3.6, compared to 3.5.
  
- For full details, see the :source:`Misc/NEWS` file.
 -For full details, see the :ref:`changelog <changelog>`.
++For full details, see the
++`changelog <https://docs.python.org/3.6/whatsnew/changelog.html>`_.
  
  .. note::
  

diff --cc Doc/whatsnew/3.7.rst
index 91c6cc1762e7bdb5d38b0afd2462ce02ca9407bb,0000000000000000000000000000000000000000..de0c3646bdb5f7477e673bc55a55747c9fc9eee8
mode 100644,000000..100644
--- 1/Doc/whatsnew/3.7.rst
--- /dev/null
+++ b/Doc/whatsnew/3.7.rst
@@@ -1,119 -1,0 +1,119 @@@
- For full details, see the :source:`Misc/NEWS` file.
 +****************************
 +  What's New In Python 3.7
 +****************************
 +
 +:Release: |release|
 +:Date: |today|
 +
 +.. Rules for maintenance:
 +
 +   * Anyone can add text to this document.  Do not spend very much time
 +   on the wording of your changes, because your text will probably
 +   get rewritten to some degree.
 +
 +   * The maintainer will go through Misc/NEWS periodically and add
 +   changes; it's therefore more important to add your changes to
 +   Misc/NEWS than to this file.
 +
 +   * This is not a complete list of every single change; completeness
 +   is the purpose of Misc/NEWS.  Some changes I consider too small
 +   or esoteric to include.  If such a change is added to the text,
 +   I'll just remove it.  (This is another reason you shouldn't spend
 +   too much time on writing your addition.)
 +
 +   * If you want to draw your new text to the attention of the
 +   maintainer, add 'XXX' to the beginning of the paragraph or
 +   section.
 +
 +   * It's OK to just add a fragmentary note about a change.  For
 +   example: "XXX Describe the transmogrify() function added to the
 +   socket module."  The maintainer will research the change and
 +   write the necessary text.
 +
 +   * You can comment out your additions if you like, but it's not
 +   necessary (especially when a final release is some months away).
 +
 +   * Credit the author of a patch or bugfix.   Just the name is
 +   sufficient; the e-mail address isn't necessary.
 +
 +   * It's helpful to add the bug/patch number as a comment:
 +
 +   XXX Describe the transmogrify() function added to the socket
 +   module.
 +   (Contributed by P.Y. Developer in :issue:`12345`.)
 +
 +   This saves the maintainer the effort of going through the Mercurial log
 +   when researching a change.
 +
 +This article explains the new features in Python 3.7, compared to 3.6.
 +
++For full details, see the :ref:`changelog <changelog>`.
 +
 +.. note::
 +
 +   Prerelease users should be aware that this document is currently in draft
 +   form. It will be updated substantially as Python 3.7 moves towards release,
 +   so it's worth checking back even after reading earlier versions.
 +
 +
 +Summary -- Release highlights
 +=============================
 +
 +.. This section singles out the most important changes in Python 3.7.
 +   Brevity is key.
 +
 +
 +.. PEP-sized items next.
 +
 +
 +
 +New Features
 +============
 +
 +
 +
 +Other Language Changes
 +======================
 +
 +
 +
 +New Modules
 +===========
 +
 +* None yet.
 +
 +
 +Improved Modules
 +================
 +
 +
 +Optimizations
 +=============
 +
 +
 +Build and C API Changes
 +=======================
 +
 +* A full copy of libffi is no longer bundled for use when building the
 +  :mod:`_ctypes <ctypes>` module on non-OSX UNIX platforms.  An installed copy
 +  of libffi is now required when building ``_ctypes`` on such platforms.
 +  Contributed by Zachary Ware in :issue:`27979`.
 +
 +
 +Deprecated
 +==========
 +
 +
 +
 +Removed
 +=======
 +
 +
 +
 +Porting to Python 3.7
 +=====================
 +
 +This section lists previously described changes and other bugfixes
 +that may require changes to your code.
 +
 +

diff --cc Misc/NEWS
Simple merge