* certlist.c (gpgsm_add_to_certlist): Fixed locating of a
certificate with the required key usage.
* gpgsm.c (main): Fixed a segv when using --outfile without an
argument.
* keylist.c (print_capabilities): Also check for non-repudiation
and data encipherment.
* certlist.c (cert_usage_p): Test for signing and encryption was
swapped.  Add a case for certification usage, handle
non-repudiation and data encipherment.
(gpgsm_cert_use_cert_p): New.
(gpgsm_add_to_certlist): Added a CTRL argument and changed all
callers to pass it.
* certpath.c (gpgsm_validate_path): Use it here to print a status
message. Added a CTRL argument and changed all callers to pass it.
* decrypt.c (gpgsm_decrypt): Print a status message for wrong key
usage.
* verify.c (gpgsm_verify): Ditto.
* keydb.c (classify_user_id): Allow a colon delimited fingerprint.