MFC r315170:
r315170 (by imp):

Adopt SRCTOP in usr.bin

Prefer ${SRCTOP}/foo over ${.CURDIR}/../../foo and ${SRCTOP}/usr.bin/foo
over ${.CURDIR}/../foo for paths in Makefiles.

Silence on: arch@ (twice)

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Convert to usr.bin/ to LIBADD
Reduce overlinking

Link otp-sha1 to match real challenge prompt, not otp-sha

MFC after: 1 week

Build usr.bin/ with WARNS=6 by default.

Also add some missing $FreeBSD$ to keep svn happy.

Add opie lib dir to includes list

Remove the WANT_INSECURE_OPIE option - it is now a default. This is not
nearly as ominous as it sounds, and it allows OPIE to be used over SSH
and on xterms.

Requested by: ache
Discussed on: -security

Switch on SHA1 hashing.

Provide a WANT_INSECURE_OPIE compile-time option, which is useful if
you encrypt all traffic routinely, and is also useful for debugging.

Also, (properly) set SUID bit on relevant apps - opieinfo and
opiepasswd, which need it to mess with /etc/opiekeys.

MAN[1-9] -> MAN.

Fix minor style nits.

Install otp-md{4,5} bits.

PR: 14911
Submitted-by: Lyndon Nerenberg <lyndon@orthanc.ab.ca>

$Id$ -> $FreeBSD$

Revert $FreeBSD$ to $Id$

Add ${.CURDIR}/ to relative path to contrib.

This commit was generated by cvs2svn to compensate for changes in r22379,
which included commits to RCS files with non-trunk default branches.

Build opiekey from contrip_opie sources.