The use of this script was discontinued when we stopped providing a full
ChangeLog in the dist with:

  commit ce97c33a
  Author: Andrea Bolognani <abologna@redhat.com>
  Date:   Mon Apr 1 17:33:03 2019 +0200

    maint: Stop generating ChangeLog from git
Reviewed-by: NJán Tomko <jtomko@redhat.com>
Signed-off-by: NDaniel P. Berrangé <berrange@redhat.com>