[updated] myfaces-extval config extension

extval 1.x.2 provides some new mechanisms. therefore the annotation based config also provides some new annotations.

new annotations:
- MetaDataExtractionInterceptor
- NameMapper
- FacesMessageFactory

extval allows name mappers for different areas. @NameMapper makes it easy to provide a custom name mapping strategies. the following screenshot shows an example how to use @NameMapper