Equality comparer doesn't compare base types

[ghost]

If a generated class has a BaseTypeHint, the generate equality comparer compares only the derived type's properties. It doesn't delegate to the base type's equality comparer to compare the base type's properties.

The nature of the base class comparison must depend on the ComparisonKind of the base class. Unfortunately, as the code stands, ComparisonKind is a property of the PropertyInfo class; that is, the code generator understands how to compare property values, but only because it understands the schema that describes the property. There is nothing that represents the ComparisonKind of a class. I'll need to add that feature.