MFC r296133:
r296133 (by pfg):

RPC: update the getrpcbyname() definition to include a const qualifier.

Add const qualifier making getrpcbyname() and getrpcbyname_r()
prototypes match those used in latest Sun RPC code (TI-RPC 2.3).

Obtained from: NetBSD

MFC r258578, r258580, r258581 (by hrs):
Replace Sun RPC license in TI-RPC library with a 3-clause BSD license
with the explicit permissions.

MFC r258578, r258580, r258581 (by hrs):
Replace Sun RPC license in TI-RPC library with a 3-clause BSD license
with the explicit permissions.