fix setsockopt SO_REUSEADDR under linux emul; from NetBSD. thanks to jpmp@fibertel.com.ar for the testbed.  ish@ ok
fix setsockopt SO_REUSEADDR under linux emul; from NetBSD.
thanks to jpmp@fibertel.com.ar for the testbed.  ish@ ok

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars