s/icl_pdu_new/icl_pdu_new_empty/g; no functional changes.

Sponsored by:	The FreeBSD Foundation
Remove check for obsolete FreeBSD versions

PR:		194517
Submitted by:	François Tigeot <ftigeot@wolfpond.org>
s/icl_pdu_new_bhs/icl_pdu_new/; no functional changes, just a little
nicer code.

Sponsored by:	The FreeBSD Foundation