Add a static method to LocaleInfo to get the native display name for a
requested locale, among the set of configured locales.

Patch by: jat
Review by: bobv, shanjian, fredsa, cromwellian



git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@1866 8db76d5a-ed1c-0410-87a9-c151d255dfc7