Fixed building bug with missed m4 directory

New version 0.3.4
New utilities: ds-require and ds-snapshot
New command line options for ds-install and ds-remove: --files and --urls

ds-repo, ds-patch and ds-provides utilities now have --quiet(-q) command line option
ds-patch utility gets provides filtering feature

External provides references can be specified explicitly (key "--external-provides" for ds-repo and ds-provides)
Sources packages file is now also read during external provides references collecting

Sisyphus is chosen as main repository
--nothing command line key is changed to --dry-run

New version

New version

New version (ds-patch utility now has --add-list and --del-list command line options)

Initial package