gpg: Move S2K encoding function to a shared file.
* g10/passphrase.c (encode_s2k_iterations): Move function to ... * common/openpgp-s2k.c: new file. Remove default intialization code. * common/openpgpdefs.h (S2K_DECODE_COUNT): New to keep only one copy. * g10/call-agent.c (agent_get_s2k_count): Change to return the count and print an error. * agent/protect.c: Include openpgpdefs.h * g10/card-util.c (gen_kdf_data): Adjust for changes * g10/gpgcompose.c: Include call-agent.h. (sk_esk): Adjust for changes. * g10/passphrase (passphrase_to_dek): Adjust for changes. * g10/main.h (S2K_DECODE_COUNT): Remove macro.
- Signed-off-by: Werner Koch <wk@gnupg.org>