Update V8 to 3.12.

Update V8 to 3.12.

This includes moving some xcode settings to
runtime-configurations.gypi as they were
conflicting with v8 build.

Testing:

$ ./tools/build.py -mrelease --arch=x64,ia32
$ ./tools/test.py -mrelease --arch ia32,x64
$ file xcodebuild/ReleaseIA32/dart xcodebuild/ReleaseX64/dart xcodebuild/ReleaseIA32/d8 xcodebuild/ReleaseX64/d8 
xcodebuild/ReleaseIA32/dart: Mach-O executable i386
xcodebuild/ReleaseX64/dart:  Mach-O 64-bit executable x86_64
xcodebuild/ReleaseIA32/d8:   Mach-O executable i386
xcodebuild/ReleaseX64/d8:    Mach-O executable i386

Committed: https://code.google.com/p/dart/source/detail?r=11597

[ricow1, 2012-08-29 16:00:17]

LGTM

https://chromiumcodereview.appspot.com/10892034/diff/1/dart/tools/gyp/configu...
File dart/tools/gyp/configurations_xcode.gypi (right):

https://chromiumcodereview.appspot.com/10892034/diff/1/dart/tools/gyp/configu...
dart/tools/gyp/configurations_xcode.gypi:52: 'Dart_simarm_Base': {
I know that there is not a conflict, but could we move this and the two below as
well, they seem to be VM dependent

[ahe, 2012-08-30 09:02:07]

PTAL

https://chromiumcodereview.appspot.com/10892034/diff/1/dart/tools/gyp/configu...
File dart/tools/gyp/configurations_xcode.gypi (right):

https://chromiumcodereview.appspot.com/10892034/diff/1/dart/tools/gyp/configu...
dart/tools/gyp/configurations_xcode.gypi:52: 'Dart_simarm_Base': {
On 2012/08/29 16:00:17, ricow1 wrote:
> I know that there is not a conflict, but could we move this and the two below
as
> well, they seem to be VM dependent

Done.

[ricow1, 2012-08-30 09:12:22]

LGTM

https://chromiumcodereview.appspot.com/10892034/diff/4003/dart/tools/gyp/conf...
File dart/tools/gyp/configurations_xcode.gypi (left):

https://chromiumcodereview.appspot.com/10892034/diff/4003/dart/tools/gyp/conf...
dart/tools/gyp/configurations_xcode.gypi:26: 'GCC_TREAT_WARNINGS_AS_ERRORS':
'YES', # -Werror
we should discuss with Ivan which of the rest of the GCC flags we can safely
move over.

[ahe, 2012-08-30 09:24:30]

Thank you, Rico!

https://chromiumcodereview.appspot.com/10892034/diff/4003/dart/tools/gyp/conf...
File dart/tools/gyp/configurations_xcode.gypi (left):

https://chromiumcodereview.appspot.com/10892034/diff/4003/dart/tools/gyp/conf...
dart/tools/gyp/configurations_xcode.gypi:26: 'GCC_TREAT_WARNINGS_AS_ERRORS':
'YES', # -Werror
On 2012/08/30 09:12:22, ricow1 wrote:
> we should discuss with Ivan which of the rest of the GCC flags we can safely
> move over.

I agree. Also, the same clean up should be done for configurations_make.gypi.