Consider moving GenericName and Record implementations in a "name" subpackage

The org.geotools.util package is becoming larger and larger. It may be helpfull to dispatch some of its classes in subpackages. This proposal is about creating a new package:

• org.geotools.util.name

and move there the following classes. We would take this opportunity for renaming some implementation classes that currently have the same name than the interface they implement.

• NameFactory
• GenericName (to be renamed: AbstractName? GenericNameImpl?)
• LocalName (to be renamed: DefaultLocalName? LocalNameImpl?)
• ScopedName (to be renamed: DefaultScopedName? ScopedNameImpl?)
• MemberNameImpl (or DefaultMemberName?)
• RecordTypeImpl (or DefaultRecordType?)

More implementations may be added later:

• Record
• NameSpace