Change Details

this allows to use the new Currency class instead of magic numbers

* removed rarely used units in favor of a simpler base/subunit scheme * had to do some type juggling in the BitcoinUnits::factor(int) function to replace the magic numbers with the Currency class * fixed the bitcoin-qt tests to account for XEC's decimal places

this allows to use the new Currency class instead of magic number* removed rarely used units in favor of a simpler base/subunit scheme * had to do some type juggling in the BitcoinUnits::factor(int) function to replace the magic numbers with the Currency class * fixed the bitcoin-qt tests to account for XEC's decimal places