Fixed test, added ajusters.
- Reintrodeuced MonetaryAdjuster.
. Also added adjuster support to echange rates, enabling builder
chaining of calculations, including currency conversion.
- Fixed tests.
Merge branch 'master' of https://github.com/JavaMoney/javamoney.git

Conflicts:
	money-platform/ri/src/test/java/javax/money/MoneyRoundingTest.java