Update stable installation instructions under GNU/Linux

_includes/download-stable.html

@@ -59,10 +59,23 @@
 
   <section class="dynare_section" id="stable_content3">
     <p>
-      Pre-compiled packages are available for two GNU/Linux distributions: Debian GNU/Linux and Ubuntu. See the InstallOnDebianOrUbuntu page on the wiki for details about the installation.
+      Several GNU/Linux distributions have official packages for Dynare:
+      <ul>
+        <li><a href="https://packages.debian.org/sid/dynare">Debian</a></li>
+        <li><a href="https://launchpad.net/ubuntu/+source/dynare">Ubuntu</a></li>
+        <li><a href="https://community.linuxmint.com/software/view/dynare">Linux Mint</a></li>
+        <li><a href="https://aur.archlinux.org/packages/dynare/">Arch Linux</a></li>
+      </ul>
+      Note that on Debian, Ubuntu and Linux Mint, you also need to install the
+      <pre>dynare-matlab</pre> package if you want MATLAB support.
+
+      Official packages may not correspond to the latest version of Dynare,
+      depending on the release schedule of the distributions.
     </p>
     <p>
-      For other GNU/Linux distributions (Fedora, RedHat Enterprise, Suse, Gentoo, Arch) we do not provide pre-compiled binaries. You need to recompile Dynare from source, as explained on the BuildingDynareFromSource page.
+      If your GNU/Linux distribution does not include a Dynare package, or if
+      it does but the package is too old, you need to recompile Dynare from
+      source, as explained in the <pre>README.md</pre> file.
     </p>
   </section>