Add two items

Doc/whatsnew/whatsnew25.tex

@@ -1137,10 +1137,10 @@ and as a result sets will use a third less memory and are somewhat faster.
 (Implemented by Raymond Hettinger.)
 
 \item The speed of some Unicode operations, such as 
-finding substrings and character map decoding, has been improved.
-(Substring search improvements were added by Fredrik Lundh and Andrew
-Dalke at the NeedForSpeed sprint. Character map decoding was improved
-by Walter D\"orwald.)
+finding substrings, string splitting, and character map decoding, has
+been improved.  (Substring search and splitting improvements were
+added by Fredrik Lundh and Andrew Dalke at the NeedForSpeed
+sprint. Character map decoding was improved by Walter D\"orwald.)
 % Patch 1313939
 
 \item The code generator's peephole optimizer now performs
@@ -1155,6 +1155,10 @@ invoked.  (Original patch by Michael Hudson, modified by Armin Rigo
 and Richard Jones; committed at the NeedForSpeed sprint.)
 % Patch 876206
 
+Frame objects are also slightly smaller, which may improve cache locality
+and reduce memory usage a bit.  (Contributed by Neal Norwitz.)
+% Patch 1337051
+
 \end{itemize}
 
 The net result of the 2.5 optimizations is that Python 2.5 runs the