Remove $FreeBSD$: one-line .c pattern

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

- Revert WARNS to 2 because of mismatch between (xdrproc_t) and xdr_void().
- Add prototype of from_addr().

spdx: initial adoption of licensing ID tags.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

Initially, only tag files that use BSD 4-Clause "Original" license.

RelNotes: yes
Differential Revision: https://reviews.freebsd.org/D13133

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.

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

Make rpc.statd INET* indipendent by converting sockaddr_in structures
to sockaddr ones and using svc_getrpccaller instead of svc_getcaller.
A similar patch was committed to rpc.lockd back in 2002 .

PR: bin/42004
MFC after: 1 week

compile under WARNS=6

(sm_mon_1_svc): Fix debugging output: when establising a monitoring
request, correctly report the location (usually localhost) to which
a callback will be made when a notification is received for the
monitored host. Previsouly, the name of the monitored host was
reported instead.

MFC after: 2 weeks

Deal with xdrproc_t casts. Make these compile cleanly with WARNS=2
(but I haven't turned it on)

use getaddrinfo() instead of gethostbyname().

Submitted by: Jean-Luc Richier <Jean-Luc.Richier@imag.fr>

mark unused variable.

make mostly WARNS=4 clean.
constify, mark unsued args, fixup prototypes.

Log the IP of the machine if an invalid host is passed over the wire.

PR: bin/29406

Fix return values in the sm_notify_1 service routine to return an answer
most of the time (unless fork fails). This should fix the problem where
FreeBSD won't respond to a remote host and therefor the remote hosts
tries indefinitely to contact the FreeBSD hosts thereby irritating the
system administrator.

PR: misc/27810

Fix syslog format errors introduced in 1.6.

add includes for inet_ntoa prototype.

Do not allow unsafe characters in monitored hostnames.

This is modified version of the fix posted in the PR, I've taken Wollman's
advice and used strvis(3) to properly show invalid hostnames.

PR: bin/39815

rename 'enum res' and 'struct status' to 'enum sm_res' and 'struct sm_status'
to avoid -Wshadow warnings in consumers of its generated header files.

$Id$ -> $FreeBSD$

Use err(3). Add usage() and #includes.

Some minor tweaks for statd
- use rpcgen to generate unmodified code instead of havinf it in the
repository
- use "natural" function names to avoid conflicts with prototypes etc.

Import Jan 15 version of Andrew Gordon <andrew.gordon@net-tel.co.uk>'s
rpc.statd.

This is apparently fully functional and complete.