Adding Cira & Mihai to OWNERS for internationalization (i18n)

Keeping the names together so that I can put one comment for both.
Might also sort alphabetically, with the comment after each email.
Not sure what option was best, I have seen it done both ways.

R=cira@chromium.org, danno@chromium.org

Review URL: https://codereview.chromium.org/26534002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17168 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/OWNERS

+per-file i18n.*=cira@chromium.org
+per-file i18n.*=mnita@google.com

test/intl/OWNERS

+cira@chromium.org
+mnita@google.com