Add some notes

llvm-svn: 18280

llvm/docs/ReleaseNotes.html

@@ -86,6 +86,7 @@ benchmarks, and <b>many</b> other C and C++ programs.</p>
 
 <div class="doc_text">
 <ol>
+  <li>LLVM now includes a JIT for the PowerPC target.</li>
   <li>LLVM now optimizes global variables significantly more than it did 
   before.
   </li>
@@ -139,6 +140,8 @@ benchmarks, and <b>many</b> other C and C++ programs.</p>
   <li>The target-to-JIT interfaces <a href="http://llvm.cs.uiuc.edu/PR283">are 
     now much simpler</a> and more powerful.
   </li>
+  <li>zlib and libpng are <a href="http://llvm.cs.uiuc.edu/PR417">no longer
+      included in the main LLVM tarball</a>.</li>
 </ol>
 
 </div>