PATCH: Update gcc-4.4/changes.html for x86-64 ABI changes

["H.J. Lu" <hjl.tools@gmail.com>]

Hi,

This patch documents x86-64 ABI changes in gcc 4.4.


H.J.
----
Index: gcc-4.4/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.4/changes.html,v
retrieving revision 1.69
diff -u -p -r1.69 changes.html
--- gcc-4.4/changes.html	19 Apr 2009 21:57:47 -0000	1.69
+++ gcc-4.4/changes.html	20 Apr 2009 02:24:22 -0000
@@ -539,6 +539,12 @@
     <li>GCC can now utilize the SVML library for vectorizing calls to
 	a set of C99 functions if <code>-mveclibabi=svml</code> is specified
 	and you link to an SVML ABI compatible library.</li>
+    <li>The following changes have been made to conform to x86-64 ABI:
+      <ul>
+	<li>Passing/returning structures with flexible array member.</li>
+	<li>Passing/returning structures with complex float member.</li>
+	<li>Passing/returning unions with long double member.</li>
+       </ul></li>
     <li>A new <code>target</code> attribute was added to allow programmers to change the target options like <code>-msse2</code> or <code>-march=k8</code> for an individual function.  You can also change the target options via the <code>GCC target</code> pragma for functions defined after the pragma.</li>
     <li>GCC can now be configured with
     options <code>--with-arch-32</code>, <code>--with-arch-64</code>,