Add some qualifications and a link to the download page

web/download.htm

@@ -229,7 +229,8 @@ package, Shorewall is included in the <a
 the <a href="http://packages.debian.org/testing/net/">Debian
 Testing Branch</a> and the <a
  href="http://packages.debian.org/unstable/net/">Debian
-Unstable Branch</a>. For new installations, it is highly recommended
+Unstable Branch</a>. For new installations of Shorewall 4.0 and 4.2, it
+is highly recommended
 that you install the shorewall-common and shorewall-perl packages
 rather than the shorewall package.<br>
     <br>
@@ -463,7 +464,7 @@ which problems are fixed in each updated package.</p>
 <h2><a name="SVN"></a><b>SVN</b></h2>
 <blockquote> The <a href="https://sourceforge.net/svn/?group_id=22587"
  target="_blank">SVN&nbsp;Repository at Sourceforge</a> is used as a
-safe-store for Shorewall releases.<br>
+safe-store for Shorewall releases up to and including Shorewall 4.2.<br>
   <br>
 You should download and use the latest SVN version only <b>at your own
 risk</b> -- <strong>please do not attempt to install Shorewall from
@@ -590,7 +591,9 @@ risk</b> -- <strong>please do not attempt to install Shorewall from
 the Git components; you will end up with an incomplete and non-working
 installation. </strong>
 <p>If you want to build your own packages from the Git images, use
-the script found in tools/build/build44.</p>
+the script found in tools/build/build44 (see <a
+ href="http://www.shorewall.net/Build.html">http://www.shorewall.net/Build.html</a>).<br>
+</p>
 If you are looking for bug fixes for the current release, see <a
  href="download.htm#Updates">above.</a>
 To create your own copy of the repository, use this command:<br>