Adapt mentions of future changes in doc

Doc/distutils/sourcedist.rst

@@ -51,8 +51,7 @@ Notes:
    of the standard Python library since Python 1.6)
 
 (4)
-   requires the :program:`compress` program. Notice that this format is now
-   pending for deprecation and will be removed in the future versions of Python.
+   requires the :program:`compress` program.
 
 When using any ``tar`` format (``gztar``, ``bztar``, ``ztar`` or
 ``tar``) under Unix, you can specify the ``owner`` and ``group`` names

Doc/library/csv.rst

@@ -40,7 +40,7 @@ using the :class:`DictReader` and :class:`DictWriter` classes.
    This version of the :mod:`csv` module doesn't support Unicode input.  Also,
    there are currently some issues regarding ASCII NUL characters.  Accordingly,
    all input should be UTF-8 or printable ASCII to be safe; see the examples in
-   section :ref:`csv-examples`. These restrictions will be removed in the future.
+   section :ref:`csv-examples`.
 
 
 .. seealso::

Doc/library/mailbox.rst

@@ -1513,7 +1513,7 @@ Older versions of the :mod:`mailbox` module do not support modification of
 mailboxes, such as adding or removing message, and do not provide classes to
 represent format-specific message properties. For backward compatibility, the
 older mailbox classes are still available, but the newer classes should be used
-in preference to them.  The old classes will be removed in Python 3.
+in preference to them.  The old classes have been removed in Python 3.
 
 Older mailbox objects support only iteration and provide a single public method:
 

Doc/library/parser.rst

@@ -34,7 +34,7 @@ the code forming the application.  It is also faster.
    replaced by "ast"; this is a legacy from the time when there was no other
    AST and has nothing to do with the AST found in Python 2.5.  This is also the
    reason for the functions' keyword arguments being called *ast*, not *st*.
-   The "ast" functions will be removed in Python 3.
+   The "ast" functions have been removed in Python 3.
 
 There are a few things to note about this module which are important to making
 use of the data structures created.  This is not a tutorial on editing the parse