wks: Support alternative submission address.
* tools/gpg-wks.h (policy_flags_s): Add field 'submission_address'. * tools/wks-util.c (wks_parse_policy): Parse that field. (wks_free_policy): New. * tools/gpg-wks-client.c (command_send): Also try to take the submission-address from the policy file. Free POLICY. * tools/gpg-wks-server.c (process_new_key): Free POLICYBUF. (command_list_domains): Free POLICY.
- Signed-off-by: Werner Koch <wk@gnupg.org>