Log Message:
gpgme: updated to 1.12.0

Noteworthy changes in version 1.12.0

 * Enhanced the JSON based interface tool gpgme-json to support Native
   Messaging as well as new Javascript code to support the browser
   site.  See lang/js/README for details.

 * Major overhaul of the Python language bindings documentation.

 * Even for old versions of gpg a missing MDC will now lead to a
   decryption failure.

 * Added context flag "auto-key-locate" to control the
   behavior of GPGME_KEYLIST_MODE_LOCATE.

 * New data function to create a data object from an estream.

 * Add more interfaces to the C++ bindings.

 * Improved error codes on decryption failure.

 * Lots of minor fixes.