Issue #25910: Fixed dead links in the docs.

Doc/faq/gui.rst

@@ -49,7 +49,7 @@ Qt
 
 There are bindings available for the Qt toolkit (using either `PyQt
 <https://riverbankcomputing.com/software/pyqt/intro>`_ or `PySide
-<https://wiki.qt.io/PySide>`_) and for KDE (`PyKDE <https://techbase.kde.org/Development/Languages/Python>`__).
+<https://wiki.qt.io/PySide>`_) and for KDE (`PyKDE4 <https://techbase.kde.org/Languages/Python/Using_PyKDE_4>`__).
 PyQt is currently more mature than PySide, but you must buy a PyQt license from
 `Riverbank Computing <https://www.riverbankcomputing.com/commercial/license-faq>`_
 if you want to write proprietary applications.  PySide is free for all applications.

Doc/howto/logging-cookbook.rst

@@ -705,7 +705,7 @@ An example dictionary-based configuration
 -----------------------------------------
 
 Below is an example of a logging configuration dictionary - it's taken from
-the `documentation on the Django project <https://docs.djangoproject.com/en/1.4/topics/logging/#configuring-logging>`_.
+the `documentation on the Django project <https://docs.djangoproject.com/en/1.9/topics/logging/#configuring-logging>`_.
 This dictionary is passed to :func:`~config.dictConfig` to put the configuration into effect::
 
     LOGGING = {
@@ -761,7 +761,7 @@ This dictionary is passed to :func:`~config.dictConfig` to put the configuration
     }
 
 For more information about this configuration, you can see the `relevant
-section <https://docs.djangoproject.com/en/1.6/topics/logging/#configuring-logging>`_
+section <https://docs.djangoproject.com/en/1.9/topics/logging/#configuring-logging>`_
 of the Django documentation.
 
 Inserting a BOM into messages sent to a SysLogHandler

Doc/whatsnew/2.1.rst

@@ -731,7 +731,7 @@ of the more notable changes are:
          ...
 
   For a fuller discussion of the line I/O changes, see the python-dev summary for
-  January 1-15, 2001 at https://www.python.org/dev/summary/2001-01-1/.
+  January 1-15, 2001 at https://mail.python.org/pipermail/python-dev/2001-January/.
 
 * A new method, :meth:`popitem`, was added to dictionaries to enable
   destructively iterating through the contents of a dictionary; this can be faster

Doc/whatsnew/2.2.rst

@@ -24,8 +24,8 @@ up irregularities and dark corners of the language design.
 This article doesn't attempt to provide a complete specification of the new
 features, but instead provides a convenient overview.  For full details, you
 should refer to the documentation for Python 2.2, such as the `Python Library
-Reference <https://www.python.org/doc/2.2/lib/lib.html>`_ and the `Python
-Reference Manual <https://www.python.org/doc/2.2/ref/ref.html>`_.  If you want to
+Reference <https://docs.python.org/2.2/lib/lib.html>`_ and the `Python
+Reference Manual <https://docs.python.org/2.2/ref/ref.html>`_.  If you want to
 understand the complete implementation and design rationale for a change, refer
 to the PEP for a particular new feature.
 
@@ -395,7 +395,7 @@ This section has just been a quick overview of the new features, giving enough
 of an explanation to start you programming, but many details have been
 simplified or ignored.  Where should you go to get a more complete picture?
 
-https://www.python.org/2.2/descrintro.html is a lengthy tutorial introduction to
+https://docs.python.org/dev/howto/descriptor.html is a lengthy tutorial introduction to
 the descriptor features, written by Guido van Rossum. If my description has
 whetted your appetite, go read this tutorial next, because it goes into much
 more detail about the new features while still remaining quite easy to read.

Doc/whatsnew/2.3.rst

@@ -1858,7 +1858,7 @@ and bundle it with the source of your extension.
 
 .. seealso::
 
-   https://svn.python.org/view/python/trunk/Objects/obmalloc.c
+   https://hg.python.org/cpython/file/default/Objects/obmalloc.c
       For the full details of the pymalloc implementation, see the comments at
       the top of the file :file:`Objects/obmalloc.c` in the Python source code.
       The above link points to the file within the python.org SVN browser.