Copy cgi.escape() to html

Doc/library/cgi.rst

Index: Doc/library/cgi.rst
===================================================================
--- Doc/library/cgi.rst	(revision 84355)
+++ Doc/library/cgi.rst	(working copy)
@@ -321,18 +321,10 @@
 
 .. function:: escape(s, quote=False)
 
-   Convert the characters ``'&'``, ``'<'`` and ``'>'`` in string *s* to HTML-safe
-   sequences.  Use this if you need to display text that might contain such
-   characters in HTML.  If the optional flag *quote* is true, the quotation mark
-   character (``"``) is also translated; this helps for inclusion in an HTML
-   attribute value delimited by double quotes, as in ``<a href="...">``.  Note
-   that single quotes are never translated.
+   This function is deprecated in this module. Use :func:`html.escape`
+   instead. It is maintained here only for backward compatibility.
 
-   If the value to be quoted might include single- or double-quote characters,
-   or both, consider using the :func:`~xml.sax.saxutils.quoteattr` function in the
-   :mod:`xml.sax.saxutils` module instead.
 
-
 .. _cgi-security:
 
 Caring about security