gpg: Extend --quick-set-expire to allow subkey expiration setting.
* g10/keyedit.c (keyedit_quick_set_expire): Add new arg subkeyfprs. (menu_expire): Rename arg force_mainkey to unattended and allow unattended changing of subkey expiration. * g10/gpg.c (main): Extend --quick-set-expire.
- Signed-off-by: Werner Koch <wk@gnupg.org>