Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

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

Correct comment typo.

Add support for TACACS+ accounting to libtacplus(3).

Submitted by: Michael Pounov misho@aitbg.com
OKed by: emaste

In tac_get_av_value() empty attributes should be handled like 0-length
strings rather than unset strings.
Fix the present wrong behaviour.

Obtained from: Sandvine Incorporated
Reviewed by: emaste
Sponsored by: Sandvine Incorporated
MFC: 1 week

Fix most cases where the address of an int is passed to a function expecting a
socklen_t * argument.

Enhance TACACS+ library to fully support authorization requests in
addition to existing authentication. No change to the existing
APIs to preseve both binary and API compatibility, so I am not
inclined to bump the library version number unless someone thinks
this is necessary.

Submitted by: Paul Fraley <fraley@juniper.net>
MFC after: 2 weeks

Add __FBSDID()s to libtacplus

strtok -> strsep (no strtok allowed in libraries)

Fix error message that was too hastily cut&pasted from libradius.

Submitted by: Alexey Zelkin <phantom@cris.net>

This commit was generated by cvs2svn to compensate for changes in r41120,
which included commits to RCS files with non-trunk default branches.

Initial import of TACACS+ client library donated by Juniper Networks, Inc.