core: Allow setting the base directory when creating an archive
* src/engine-gpg.c (gpg_encrypt, gpg_encrypt_sign, gpg_sign): Pass file name set in data with --directory option to gpgtar. * tests/run-encrypt.c (show_usage): New option --directory. (main): Parse new option. Set file name of input data to option value. * tests/run-sign.c (show_usage): New option --directory. (main): Parse new option. Set file name of input data to option value.
- GnuPG-bug-id: T6342