usr.bin: Automated cleanup of cdefs and other formatting

Apply the following automated changes to try to eliminate
no-longer-needed sys/cdefs.h includes as well as now-empty
blank lines in a row.

Remove /^#if.*\n#endif.*\n#include\s+<sys/cdefs.h>.*\n/
Remove /\n+#include\s+<sys/cdefs.h>.*\n+#if.*\n#endif.*\n+/
Remove /\n+#if.*\n#endif.*\n+/
Remove /^#if.*\n#endif.*\n/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/types.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/param.h>/
Remove /\n+#include\s+<sys/cdefs.h>\n#include\s+<sys/capsicum.h>/

Sponsored by: Netflix

Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

Revert capsicum support

In some corner case VFS lookup is not working and I do not have time to debug
it for now.

Fix typo introduced in r305949 with the stable/10 bootstrapping logic

The header is sys/capability.h, not sys/capabilities.h

X-MFC with: r305949
Pointyhat to: bapt
Reported by: allanjude, Jenkins
Sponsored by: Dell EMC Isilon

Simplify the fix for bootstrap tools

building head is not supported from prior to stable/10 where sys/capsicum.h was
named sys/capabilities.h

Reported by: kib

Fix building as bootstrap tools on pre-capsicum.h systems

Better error checking

if getcwd fails: just ignore it and do not try to adding to the list of possible
path where to find the files.

if fdopen fails, warn and return NULL the rest of the code knows how to deal
with it

Reported by: oshogbo

style(9) fix

Reported by: oshogbo

Capsicum-ize soelim(1).

As a trick to be able to access all files passed in arguments (readonly) within
the sandbox we first open the root directory, then consider all files as
relative to this file descriptor.

This might be improved once casper add supports for filesystem.

MFC after: 1 month
Reviewed by: allanjude
Differential Revision: https://reviews.freebsd.org/D7936

Remove usage of _WITH_GETLINE from usr.bin

add an include on sys/types.h because we do explicitly use size_t
remove unused stdbool.h

Suggested by: schwarze at OpenBSD

Use the POSIX PATH_MAX macro from limits.h instead of non standard MAXPATHLEN

Submitted by: schwarze at OpenBSD

sort headers

Parse filename until first space then print the rest of the line after file
inclusion

This is the same behaviour of heirloom's soelim

Improve compatibility groff's soelim
While here implement -C from GNU groff

Reported by: delphij

Correct - handling.

Reported by: pkg-fallout
X-MFC-with: r282318

Replace groff's soelim by soeliminate(1) renamed soelim(1)

We use modernized version of soelim(1) shipped with Groff.

Output .lf directives.

ANSIify function definitions.
Add some constness to avoid some warnings.
Remove use register keyword.
Deal with missing/unneeded extern/prototypes.
Some minor type changes/casts to avoid warnings.

Reviewed by: md5

remove __P

Warns cleanups.

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

Don't call warn() with no format string.

$Id$ -> $FreeBSD$

Use err(3). Add prototype.

BSD 4.4 Lite Usr.bin Sources