Update V8's dependencies:

GYP: Correctly handle GCC_C_LANGUAGE_STANDARD 'ansi'
ICU: Use the correct assembly file when cross compiling from Mac to Android

BUG=none
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/21034003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15988 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Stores to external references don't need write barriers.

This also applies to stores with an external field representation.

Also cleans up the CreateAllocationSiteStub.

R=mstarzinger@chromium.org, mvstanton@chromium.org

Review URL: https://codereview.chromium.org/21357003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@15989 ce2b1a6d-e550-0410-aec6-3dcde31c8c00