gpg: Emit ERROR status for key signing failures.
* g10/keyedit.c (sign_uids): Write an ERROR status for a signing failure. (menu_adduid, menu_addrevoker, menu_revsig): Ditto. (menu_revuid, menu_revkey, menu_revsubkey): Ditto.
This change helps GPA to show better error messages.
- Signed-off-by: Werner Koch <wk@gnupg.org>