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

- Fall-back to /etc/termcap.small if there is no /usr/share/misc/termcap
(i.e. /etc/termcap). This can be useful when using /rescue/vi while /usr
is not (or unable to be) mounted. The termcap.small can be found in
src/etc/termcap.small.

PR: bin/80256 (audit-trail)
Submitted by: Brian Candler <B.Candler at pobox.com>, Alex Kozlov <spam at rm-rf.kiev.ua>
MFC after: 1 month

Force commit to note the following repocopies:

lib/libform/Makefile -> lib/ncurses/form/Makefile
lib/libmenu/Makefile -> lib/ncurses/menu/Makefile
lib/libncurses/Makefile -> lib/ncurses/ncurses/Makefile
lib/libncurses/ncurses_cfg.h -> lib/ncurses/ncurses/ncurses_cfg.h
lib/libncurses/pathnames.h -> lib/ncurses/ncurses/pathnames.h
lib/libncurses/termcap.c -> lib/ncurses/ncurses/termcap.c
lib/libpanel/Makefile -> lib/ncurses/panel/Makefile

Approved by: delphij
Repocopied by: kuriyama

Remove California Regent's clause 3, per letter

Use src/contrib/ncurses, v5.0.990821 prerelease.

This isn't quite finished yet, there are still some unresolved problems
with ospeed and the sgtty.h (non-posix) terminal interface. Mostly
this only causes problems with src/games.

The other tools and libraries (libform,libpanel,libmenu) will come
shortly but are seperate.

Beware, there be dragons here! (The build will be broken for a short
while)