Include containing type's visibility on visibility check

[paul-bennett]

Sometimes Juggle will emit matches for methods (and presumably fields and types) that don't show up in the JavaDoc. For example, output for the query $ juggle '? compare' includes the compare method of the nested java.util.Collections.ReverseComparator class.

Because ReverseComparator has package accessibility, Juggle shouldn't include this match in its output.

When checking visibility of a member, field or class, Juggle should also recursively check the visibility of containing types.