(main): Print operation info.
* engine-gpgsm.c (map_assuan_error): Map No_Data_Available to EOF.
* import.c (append_xml_impinfo): Kludge to print fingerprint
instead of keyid for use with gpgsm.
(import_status_handler): Set a flag to know whether any import
occured.
(gpgme_op_import): Reurn -1 if no certificate ewas imported.
* gpgme.texi (Importing Keys): Document the return value -1 of
gpgme_op_import.