pkg/51575: pkgsrc multimedia/ffmpeg3 build/configure error

[bch <brad.harder%gmail.com@localhost>]

>Number:         51575
>Category:       pkg
>Synopsis:       multimedia/ffmpeg3 not building/configuring correctly
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Oct 24 23:10:00 +0000 2016
>Originator:     bch <brad.harder%gmail.com@localhost>
>Release:        NetBSD 7.99.40
>Organization:
	methodlogic.net
>Environment:
System: NetBSD kamloops 7.99.40 NetBSD 7.99.40 (GENERIC) #33: Mon Oct
24 10:26:03 PDT 2016
root@kamloops:/usr/obj/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
>Description:
	There appears to be a misconfigured ar(1) operation. This
	is a subsection of the emitted build output:

[...]
CC      libavdevice/xv.o
AR      libavdevice/libavdevice.a
/usr/bin/ranlib: invalid option -- l
/usr/bin/ranlib: invalid option -- i
/usr/bin/ranlib: invalid option -- b
/usr/bin/ranlib: invalid option -- a
/usr/bin/ranlib: invalid option -- d
/usr/bin/ranlib: invalid option -- e
/usr/bin/ranlib: invalid option -- i
/usr/bin/ranlib: invalid option -- c
/usr/bin/ranlib: invalid option -- e
/usr/bin/ranlib: invalid option -- /
/usr/bin/ranlib: invalid option -- l
/usr/bin/ranlib: invalid option -- i
/usr/bin/ranlib: invalid option -- b
/usr/bin/ranlib: invalid option -- a
/usr/bin/ranlib: invalid option -- d
/usr/bin/ranlib: invalid option -- e
/usr/bin/ranlib: invalid option -- i
/usr/bin/ranlib: invalid option -- c
/usr/bin/ranlib: invalid option -- e
/usr/bin/ranlib: invalid option -- .
/usr/bin/ranlib: invalid option -- a
GNU ranlib (NetBSD Binutils nb1) 2.26.1
Copyright (C) 2015 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
[...]

>How-To-Repeat:
	With latest(?) multimedia/ffmpeg3, build.
>Fix: