EXFLAG_NSCERT
x->ex_flags |= EXFLAG_NSCERT;
else if (x->ex_flags & EXFLAG_NSCERT &&
if (x->ex_flags & EXFLAG_NSCERT) {
(((x)->ex_flags & EXFLAG_NSCERT) && !((x)->ex_nscert & (usage)))