tools: Add options to gpg-wks-server.
* tools/gpg-wks.h (opt): Add 'default_from' and 'extra_headers'. * tools/gpg-wks-server.c (oFrom, oHeader): New. (parse_arguments): Set them and check args. (get_submission_address): New. (send_confirmation_request): Set correct From address. Add extra headers. (process_new_key): Return an error code.
- Signed-off-by: Werner Koch <wk@gnupg.org>