#2 TypeConverterManager and interfaces

[Brian Pontarelli]

The TypeConverterManager currently looks in the class
heirarchy when searching for TypeConverters. This needs
to be changed to include the interfaces as well.

I can see a future need for a TypeConverter that is
used for a general interface. and works for all
sub-classes. Or a Java bean property that is an
interface type. The second one might work as is, but
the first one requires that the TypeConverterManager be
updated.