* Uses the DataType role when creating instances for interface properties,
  rather than using the interface itself as the role.

* Added ObjectConfigurer.getTypedProperty().  This replaces the implicit
  behaviour in DefaultObjectConfigurer.getProperty() where the typed
  property was returned for an unknown property name.

* Typed properties are set using attributes and references, with the
  property's interface role shorthand name.  Previously, the DefaultConfigurer
  would attempt to set the typed property for any unknown attribute or
  reference name.

* Can have a set() method for a typed property, rather than an add() method.
  Same semantics as setX() and addX() methods.

* Added a several more test cases.


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@271227 13f79535-47bb-0310-9956-ffa450edef68