* mkerrors: Prettier error formating for gpg-error style codes.
* conversion.c (_gpgme_parse_timestamp): New. Now also handles ISO
8601 timestamps as used by gnupg 1.9.2.
* keylist.c (parse_timestamp): Removed. Replaced calls by
_gpgme_parse_timestamp.
* verify.c (_gpgme_verify_status_handler): Replaced strtoul by
_gpgme_parse_timestamp.
* sign.c (append_xml_siginfo): Ditto.
* NEWS: Add note about moving "gpgmeplug" to the "cryptplug"
package.
* README: Remove instructions related to "gpgmeplug".
* configure.ac: Remove enable option "gpgmeplug" and automake
conditional BUILD_GPGMEPLUG, as well as the status info about it.
(GPGMEPLUG): Remove variable.
* Makefile.am (gpgmeplug): Remove variable.
(SUBDIRS): Remove ${gpgmeplug}.
* cryptplug.h, gpgme-openpgp.c, gpgmeplug.dox, gpgme-smime.c,
Makefile.am, gpgmeplug.c, ChangeLog: Files removed.
