[wwwdocs] Update list of 4.9 secondary platforms

[Jakub Jelinek]

Hi!

I've been told that the SC has approved the secondary platform list changes,
so I went ahead and committed the changes to our web pages.

--- gcc-4.9/criteria.html       15 Mar 2013 16:39:45 -0000      1.1
+++ gcc-4.9/criteria.html       13 Mar 2014 15:01:00 -0000
@@ -110,12 +110,12 @@ application testing.</p>
 
 <p>The secondary platforms are:</p>
 <ul>
-<li>hppa2.0w-hp-hpux11.11</li>
 <li>powerpc-ibm-aix7.1.0.0</li>
 <li>i686-apple-darwin</li>
 <li>i686-pc-cygwin</li>
 <li>i686-mingw32</li>
 <li>s390x-linux-gnu</li>
+<li>aarch64-elf</li>
 </ul>
 
 <h1>Code Quality and Compilation Time</h1>

        Jakub