Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

setfacl: style and break main() into manageable pieces

Submitted by: Mitchell Horne
MFC with: r332396
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D15060

setfacl: add recursive functionality

Add a -R option to setfacl to operate recursively on directories, along
with the accompanying flags -H, -L, and -P (whose behaviour mimics
chmod).

A patch was submitted with PR 155163, but this is a new implementation
based on comments raised in the Phabricator review for that patch
(review D9096).

PR: 155163
Submitted by: Mitchell Horne <mhorne063@gmail.com>
Reviewed by: jilles
MFC after: 2 weeks
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D14934

Fix warnings found by -Wmising-variable-declarations.

This self-written compiler warning, which is hopefully going to be
committed into LLVM sources soon, warns about potentially missing
`static' keywords, similar to -Wmissing-prototypes.

- bin/pax: Move external declaration of chdname and s_mask into extern.h.
- bin/setfacl: Move setfacl.c-specific stuff out of setfacl.h.
- sbin/mount_fusefs: Remove char *progname; use getprogname().
- others: add `static' where possible.

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

Create the altix project branch. The altix project will add support
for the SGI Altix 350 to FreeBSD/ia64. The hardware used for porting
is a two-module system, consisting of a base compute module and a
CPU expansion module. SGI's NUMAFlex architecture can be an excellent
platform to test CPU affinity and NUMA-aware features in FreeBSD.

Switch to our preferred license text.

Approved by: jedgar

MFC r201016:

Improve ACL branding mismatch detection and reporting in some rare cases,
such as "setfacl -m ''".

MFC r196936:

Add NFSv4 support to setfacl(1).

Improve ACL branding mismatch detection and reporting in some rare cases,
such as "setfacl -m ''".

Add NFSv4 support to setfacl(1).

Reviewed by: rwatson

- Import the HEAD csup code which is the basis for the cvsmode work.

/*- or .\"- or #- to begin license clauses.

Add "-h" arguments to getfacl and setfacl, which behave in a manner
similar to "-h" on chown, chmod, etc, causing the operation to occur
on a final symlink in the provided path, rather than its target.

Obtained from: TrustedBSD Project

Add defines for access and default ACLs (ACCESS_ACL/DEFAULT_ACL)
to enhance readability.

Obtained from: TrustedBSD Project

o Separate acl_t into internal and external representations as
required by POSIX.1e. This maintains the current 'struct acl'
in the kernel while providing the generic external acl_t
interface required to complete the ACL editing library.
o Add the acl_get_entry() function.
o Convert the existing ACL utilities, getfacl and setfacl, to
fully make use of the ACL editing library.

Obtained from: TrustedBSD Project

o Missed in addition of setfacl.h in setfacl(1)