- cache 'FAMILES' and 'HIERARCHY_DEPTHS'
- usage output reviewed
- append_path (), prepend_path(), remove_path() moved to libpmodules
- is_modulefile() added (testing shebang)
- argument/option handling reviewed, using 'getopt' now for all sub-commands
- in sub-command 'load': testing whether a module is loadable improved
- use 'info' for most output
- bugfixes