add option to copy crate to current working directory
This is needed to support the rust2rpm OBS source service.
Merges: https://pagure.io/fedora-rust/rust2rpm/pull-request/52
Signed-off-by: Neal Gompa <ngompa13@gmail.com>
Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>