Add a general "About" page and link to it from the index page.

This fixes SourceForge bug #113810.
diff --git a/Doc/html/about.html b/Doc/html/about.html
new file mode 100644
index 0000000..5862a38
--- /dev/null
+++ b/Doc/html/about.html
@@ -0,0 +1,73 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
+<html>
+  <head>
+    <title>About the Python Documentation</title>
+    <meta name="description"
+      content="Overview information about the Python documentation">
+    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
+    <link rel="STYLESHEET" href="lib/lib.css">
+  </head>
+  <body bgcolor=white>
+    <div class="navigation">
+      <table width="100%" cellpadding="0" cellspacing="2">
+          <tr>
+            <td><img width="32" height="32" align="bottom" border="0" alt=""
+                src="icons/blank.gif"></td>
+            <td><a href="./"
+                title="Python Documentation Index"><img width="32" height="32"
+                  align="bottom" border="0" alt="up"
+                  src="icons/up.gif"></a></td>
+            <td><img width="32" height="32" align="bottom" border="0" alt=""
+                src="icons/blank.gif"></td>
+            <td align="center" bgcolor="#99CCFF" width="100%">
+              <b class="title">About the Python Documentation</b></td>
+            <td><img width="32" height="32" align="bottom" border="0" alt=""
+                src="icons/blank.gif"></td>
+            <td><img width="32" height="32" align="bottom" border="0" alt=""
+                src="icons/blank.gif"></td>
+            <td><img width="32" height="32" align="bottom" border="0" alt=""
+                src="icons/blank.gif"></td>
+          </tr>
+      </table>
+      <b class="navlabel">Up:</b>
+      <span class="sectref">
+        <a href="./" title="Python Documentation Index">
+          Python Documentation Index</A></span>
+      <br>
+    </div>
+    <hr>
+
+    <h2>About the Python Documentation</h2>
+
+    <p>The Python documentation was originally written by Guido van
+      Rossum, but has increasingly become a community effort over the
+      past several years.  This growing collection of documents is
+      available in several formats, including typeset versions in PDF
+      and PostScript for printing, from the <a
+        href="http://www.python.org/">Python Web site</a>.
+
+    <h2>Comments and Questions</h2>
+
+    <p> General comments and questions regarding this document should
+      be sent by email to <a href="mailto:python-docs@python.org"
+        >python-docs@python.org</a>.  If you find specific errors in
+      this document, please report the bug at the <a
+        href="http://sourceforge.net/bugs/?group_id=5470">Python Bug
+        Tracker</a> at <a href="http://sourceforge.net/">SourceForge</a>.
+    </p>
+
+    <p> Questions regarding how to use the information in this
+      document should be sent to the Python news group, <a
+        href="news:comp.lang.python">comp.lang.python</a>, or the <a
+        href="http://www.python.org/mailman/listinfo/python-list"
+        >Python mailing list</a> (which is gated to the newsgroup and
+      carries the same content).
+    </p>
+
+    <p> For any of these channels, please be sure not to send HTML email.
+      Thanks.
+    </p>
+
+    <hr>
+  </body>
+</html>