Several countries apparently have changed their currencies, and we need the
local currency symbols for their new currencies (such as "$" as the symbol used
in the US for the US Dollar). The countries, ISO 4217 currency codes for the new
currency, and currency symbols for the previous currency are:

- Sudan, new code SDD, old symbol \u062c.\u0633.\u200f
- Belarus, new code BYR, old symbol \u0420\u0443\u0431
- Bulgaria, new code BGN, old symbol Lr
- Ecuador, new code USD, old symbol S/
- Yugoslavia, new code YUM, old symbols Din (Serbo-Croatian), \u0414\u0438\u043d
(Serbian)

Regression test file test/java/text/Format/CurrencySymbols.properties currently has a workaround for these currencies; it should be fixed too.