Issue #2811165: Expand list of countries to one per line in postal_code_validation_get_countries_without_codes().

This makes diffs easier to read.

Issue #2406079: Correct remaining US states for ZIP code prefixes in different state from their SCF.

git authored Jan 15, 2015 and Liam Morland committed Jan 15, 2015

Issue #2406079 by rsmylski: Correct some US states for ZIP code prefixes in different state from their SCF.

API change: Array is now returned always, including for unsupported countries. These get a basic check that they are only using valid alphanumeric characters.