Prepare to push version 1.2.3 to trunk.

Review URL: http://codereview.chromium.org/113210

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1908 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

ChangeLog

+2009-05-11: Version 1.2.3
+
+        Fixed bug in reporting of out-of-memory situations.
+
+        Introduced hidden prototypes on certain builtin prototype objects
+        such as String.prototype to emulate JSC's behavior of restoring
+        the original function when deleting functions from those prototype
+        objects.
+
+        Fixed crash bug in the register allocator.
+
+
 2009-05-04: Version 1.2.2
 
         Fixed bug in array sorting for sparse arrays (issue 326).

src/version.cc

@@ -34,7 +34,7 @@
 // cannot be changed without changing the SCons build script.
 #define MAJOR_VERSION     1
 #define MINOR_VERSION     2
-#define BUILD_NUMBER      3
+#define BUILD_NUMBER      4
 #define PATCH_LEVEL       0
 #define CANDIDATE_VERSION true