[analyzer] Add CString checks to the release notes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151286 91177308-0d34-0410-b5e6-96231b3b80d8

www/analyzer/release_notes.html

@@ -24,9 +24,11 @@
 <ul>
   <li>Contains a new experimental malloc/free checker.</li>
   <li>Better support for projects using ARC.</li>
-  <li>set-xcode-analyzer now supports self-contained Xcode.app (Xcode 4.3 and later).
-  <li>Misc. bug fixes and performance work.</li>
+  <li>Warns about null pointers passed as arguments to C string functions.</li>
+  <li>Warns about common anti-patterns in 'strncat' size argument, which can lead to buffer overflows.</li>
+  <li>set-xcode-analyzer now supports self-contained Xcode.app (Xcode 4.3 and later).</li>
   <li>Contains a newer version of the analyzer than Xcode 4.3.</li>
+  <li>Misc. bug fixes and performance work.</li>
 </ul>
 
 <h4 id="checker_260">checker-260</h4>