Parsing and using currency-related data in cldr that we hadn't previously touched.
Adds a CldrCurrencies class with static functions to access this data

Whitespace cleanup, modifiction of some control structures for speed

Change-Id: I3a0b0bb6a8be4a4fe2ad903a94ba6fcb80903f05
Note: Even though the modifications to rebuild.php would change all the files in CldrNames when used, I am holding off on committing those rebuilt files to make code review less horrifying.
Merge "Parsing and using currency-related data in cldr that we hadn't previously touched. Adds a CldrCurrencies class with static functions to access this data"