[PATCH][wwwdocs] Document removal of -mlra/-mnolra from Aarch64 and ARM backends.

[Matthew Wahab]

Hello,

This patch documents in changes.html the removal of the -mlra/-mnolra 
from the Aarch64 and ARM backends.

Tested by checking the updated webpage in Firefox.

Matthew WahabIndex: htdocs/gcc-5/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-5/changes.html,v
retrieving revision 1.67
diff -u -r1.67 changes.html
--- htdocs/gcc-5/changes.html	19 Jan 2015 15:48:46 -0000	1.67
+++ htdocs/gcc-5/changes.html	20 Jan 2015 11:30:25 -0000
@@ -456,7 +456,10 @@
      <li>Support for the Cavium ThunderX processor is now available through the
     <code>-mcpu=thunderx</code> and <code>-mtune=thunderx</code> options.
      </li>
-
+     <li>The transitional options <code>-mlra</code> and <code>-mno-lra</code>
+       have been removed. The AArch64 backend now uses the local register
+       allocator (LRA) only.
+     </li>
    </ul>
 
 <h3 id="arm">ARM</h3>
@@ -488,7 +491,10 @@
       <li> The options relating to the old ABI <code>-mapcs</code> and
       <code>-mapcs-frame</code> have been deprecated.
       </li>
-
+      <li>The transitional options <code>-mlra</code> and <code>-mno-lra</code>
+       have been removed. The ARM backend now uses the local register allocator
+       (LRA) only.
+     </li>
      </ul>
 
 <h3 id="x86">IA-32/x86-64</h3>