RF+BRK: dictionary return from copy_recurse

Return libraries that depend as well as the libraries depended on, but
fixing and returing a dict instead of a set of depended library names.
RF: strip leading '.' for packages in CWD
RF: adapt to dictionary copied_libs return

To show dependencies, return a dictionary from copied libs with the
libraries depending on the copied libraries.
NF: add ability to list dependencies from script

Still needs some tests.