UNITSOFMEASUREMENT-72: Move some elements in "format" to RI/other impl 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-72
UNITSOFMEASUREMENT-69: Rethink hierarchy (and possibly naming) of
Quantity and Measurement 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-69
UNITSOFMEASUREMENT-69: Rethink hierarchy (and possibly naming) of
Quantity and Measurement 
Refactored test package name
Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-69
UNITSOFMEASUREMENT-69: Rethink hierarchy (and possibly naming) of
Quantity and Measurement 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-69
UNITSOFMEASUREMENT-69: Rethink hierarchy (and possibly naming) of
Quantity and Measurement 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-69
UNITSOFMEASUREMENT-73: Refactor Quantity 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-73
UNITSOFMEASUREMENT-65: Move QuantityFactory from "function" to "spi" 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-65
UNITSOFMEASUREMENT-73: Refactor Quantity 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-73
UNITSOFMEASUREMENT-73: Refactor Quantity 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-73