Prepare push to trunk. Now working on version 2.2.23.

ChangeLog

+2010-07-05: Version 2.2.22
+
+        Added ES5 Object.isExtensible and Object.preventExtensions.
+
+        Enabled building V8 as a DLL.
+
+        Fixed a bug in date code where -0 was not interpreted as 0
+        (issue 736).
+
+        Performance improvements on all platforms.
+
+
 2010-06-30: Version 2.2.21
 
         Fix bug in externalizing some ASCII strings (Chromium issue 47824).
 
         Update JSON.stringify to floor the space parameter (issue 753).
 
         Update the Mozilla test expectations to the newest version.
 
         Update the ES5 Conformance Test expectations to the latest version.
 
         Update the V8 benchmark suite.
 
         Provide actual breakpoints locations in response to setBreakpoint
         and listBreakpoints requests.
 
+
 2010-06-28: Version 2.2.20
+
         Fix bug with for-in on x64 platform (issue 748).
 
         Fix crash bug on x64 platform (issue 756).
-        
+
         Fix bug in Object.getOwnPropertyNames. (chromium issue 41243).
 
-        Fix a bug on ARM  that caused the result of 1 << x to be 
+        Fix a bug on ARM that caused the result of 1 << x to be
         miscalculated for some inputs.
 
         Performance improvements on all platforms.
 
+
 2010-06-23: Version 2.2.19
 
         Fix bug that causes the build to break when profillingsupport=off
         (issue 738).
 
         Added expose-externalize-string flag for testing extensions.
 
         Resolve linker issues with using V8 as a DLL causing a number of
         problems with unresolved symbols.
 
@@ skipping 19 matching lines @@
 
 2010-06-14: Version 2.2.17
 
         Improved debugger support for stepping out of functions.
 
         Incremental performance improvements.
 
 
 2010-06-09: Version 2.2.16
 
-        Removed the SetExternalStringDiposeCallback API. Changed the 
+        Removed the SetExternalStringDiposeCallback API. Changed the
         disposal of external string resources to call a virtual Dispose
         method on the resource.
 
-        Added support for more precise break points when debugging and 
+        Added support for more precise break points when debugging and
         stepping.
 
         Memory usage improvements on all platforms.
 
 
 2010-06-07: Version 2.2.15
 
         Add an API to control the disposal of external string resources.
 
         Add missing initialization of a couple of variables which makes
@@ skipping 1740 matching lines @@
 
         Improved debugger support by allowing nested break points and by
         dealing with stack-overflows when compiling functions before
         setting break points in them.
 
 
 2008-07-03: Version 0.1.0
 
         Initial export.