Package grouping all classes which deal with archive entries and real files.
It mainly consists of the base {@link sam.entry.Entry entry} type and
a generic {@link sam.entry.Enumerator enumerator} abstraction with several
concrete implementations (@see sam.entry.FileSystem).
It also defines general-purpose entry {@link sam.entry.NameFilter} filters
which are generalizations on regular expressions to Entry
enumerators.