Add a proper blurb for the PPCallbacks features.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@145261 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index 033af8e..6dc0f54 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -98,12 +98,6 @@
   <li>Uninitialized values Clang warning rewrite -- more accurate, faster, able
   to differentiate between the possibility of an uninitialized use and the
   certainty of an uninitialized use.</li>
-  <li>Enhancements to PPCallbacks
-    <ul>
-      <li>exact include paths</li>
-      <li>source range for macro expansions</li>
-    </ul>
-  </li>
   <li>Support for language specific address spaces</li>
   <li>Support for compiling on NetBSD systems -- Joerg Sonnenberger to fill
   out</li>
@@ -176,6 +170,16 @@
   and memory model -- efriedma, jyasskin</li>
 </ul>
 
+<h4 id="ppcallbacks">Expanded support for instrumenting the preprocessor through
+  callbacks</h4>
+Several enhancements were made to the <code>PPCallbacks</code> interface to expand the information available to tools and library users of Clang that wish to introspect the preprocessing.
+<ul>
+  <li>The exact text used between the <code>""</code>s or <code>&lt;&gt;</code>s is reported.</li>
+  <li>The header search path used to locate the header is reported.</li>
+  <li>Missing files during including headers reported.</li>
+  <li>The exact source range for expanded macros can be retrieved.</li>
+</ul>
+
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 <h3 id="cchanges">C Language Changes in Clang</h3>
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