MFC r308432, r308657: Capsicumize some trivial stdio programs

r308432: Capsicumize some trivial stdio programs

Trivially capsicumize some simple programs that just interact with
stdio. This list of programs uses 'pledge("stdio")' in OpenBSD.

r308657: fold(1): Revert incorrect r308432

As Jean-Sébastien notes, fold(1) requires handling argv-supplied files. That
will require a slightly more sophisticated approach.

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

Remove the advertising clause from UCB copyrighted files in usr.bin. This
is in accordance with the information provided at
ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change

Also add $FreeBSD$ to a few files to keep svn happy.

Discussed with: imp, rwatson

Alow dirname(1) to accept multiple arguments in the same way that
basename(1) does.

(Two different PRs contained identical patches, both cited below)

PR: 121520, 86148
Submitted by: Ighighi <ighighi at gmail dot com>
Submitted by: Leif Neland <leif at neland dot dk>
MFC after: 3 days

Sync program's usage() with manpage's SYNOPSIS.

ANSIify function definitions to avoid a warning.

Consistently use FBSDID

remove __P

Include missing header files which define functions for which gcc has
builtins (e.g., exit).

Submitted by: Mike Barcroft <mike@q9media.com>

Reintroduce functionality and error checks that were boneheadedly removed
in the previous commit. Pass me the pointy hat.

PR: bin/21061

Use dirname(3).

Tweaks to allow compiling -Wall (mostly adding "const" to char rcsid[]).

compare return value from getopt against -1 rather than EOF, per the final
posix standard on the topic.

Merge from Lite2

Remove trailing whitespace.

This commit was generated by cvs2svn to compensate for changes in r1590,
which included commits to RCS files with non-trunk default branches.

BSD 4.4 Lite Usr.bin Sources