Initialize ICU when running cctests.

This is required on Windows to load the ICU data tables.

BUG=none
R=machenbach@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/24273002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16825 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Collect garbage before serializing heap in test-serialize

BUG=none
TEST=nosnap bots with i18n enabled are happy
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/24196004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16826 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Turn on i18n support by default

This reverts commit r16789

BUG=none
R=machenbach@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/23522063

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16827 ce2b1a6d-e550-0410-aec6-3dcde31c8c00