Add CXX for Tru64 to list of supported compilers.

[SVN r37703]

index.htm

@@ -634,6 +634,9 @@
                           </li>
 
                           <li><a href="http://h30097.www3.hp.com/cplus/">HP
+                          C++ for Tru64 UNIX 7.1</a>.</li>
+
+                          <li><a href="http://www.hp.com/go/c++">HP
                           aC++ A.06.14</a>.</li>
 
                           <li><a href=