Remove bogus 2 char limit for locales and countries.

Locale settings are persisted to system properties
and not to system settings, so the values read here
are used pretty much everywhere.

bug: 15873165
bug: 10090157

Change-Id: Ie7cda166439112c615afbd38253cf4fbb5791242
Merge "Remove bogus 2 char limit for locales and countries." into du44