Patch xmaxima intro page to point to local copy of docs



The windows version of maxima uses xmaxima as the GUI.  This patch to the 
xmaxima start page points to the local copy of the maxima manual, rather
that the old versions.

I will apply in a couple of days if there are no objections.


$ diff -u intro.html~ intro.html
--- intro.html~ Mon Jun  7 22:34:19 2004
+++ intro.html  Wed Jun  9 11:05:49 2004
@@ -15,7 +15,7 @@
 Procedures can be programmed and then run by Maxima to
 do complex tasks.  Much of the syntax for other languages such as
 Maple was copied from Maxima.   Full
-<a href=http://www.ma.utexas.edu/maxima/>;
+<a href="../doc/html/maxima_toc.html">
 documentation </a>is available.
 
 <p>To do basic operations, a line is typed, followed by a