Sutou Kouhei authored May 31, 2019 and Daiki Ueno committed Jun 09, 2019

Added macros:

  * SECRET_VERSION_MAJOR
  * SECRET_VERSION_MINOR
  * SECRET_VERSION_MICRO
  * SECRET_CHECK_VERSION

These macros are widely defined in GLib based library. For example,
GLib, GTK, poppler GLib and so on define them.

These macros are useful to detect libsecret version on build type and
from GObject Introspection based bindings.