whatsnew: pyvenv --copies option.

Also added the missing documentation for new new option.

Doc/using/venv-create.inc

@@ -38,6 +38,8 @@ The command, if run with ``-h``, will show the available options::
                              virtual environment.
       --symlinks             Try to use symlinks rather than copies, when symlinks
                              are not the default for the platform.
+      --copies               Try to use copies rather than symlinks, even when
+                             symlinks are the default for the platform.
       --clear                Delete the environment directory if it already exists.
                              If not specified and the directory exists, an error is
                              raised.
@@ -47,7 +49,8 @@ The command, if run with ``-h``, will show the available options::
                              environment (pip is bootstrapped by default)
 
 .. versionchanged:: 3.4
-   Installs pip by default, added the ``--without-pip`` option
+   Installs pip by default, added the ``--without-pip``  and ``--copies``
+   options
 
 If the target directory already exists an error will be raised, unless
 the ``--clear`` or ``--upgrade`` option was provided.

Doc/whatsnew/3.4.rst

@@ -1508,6 +1508,10 @@ Other Improvements
   Stinner using his :pep:`445`-based ``pyfailmalloc`` tool (:issue:`18408`,
   :issue:`18520`).
 
+* The :ref:`pyvenv <scripts-pyvenv>` command now accepts a ``--copies`` option
+  to use copies rather than symlinks even on systems where symlinks are the
+  default.  (Contributed by Vinay Sajip in :issue:`18807`.)
+
 
 Significant Optimizations
 -------------------------