Add equals/hashCode to CurrencyUnit to works across serialization
Add equals/hashCode to CurrencyUnit to works across serialization

git-svn-id: 5c21f814ed2156ff2a764b69ad8acd89ddbf520d@111 2c5f9ba7-4085-48b6-80d1-8d266ab48176

fengshao0907/joda-money,JodaOrg/joda-money,JodaOrg/joda-money,fengshao0907/joda-money