Remove $FreeBSD$: one-line .h pattern

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

Make include/malloc.h usable again.

Lot of third-party Linux code uses #include <malloc.h>, expecting to
find the malloc extensions there. Instead of trying to fight them,
accept that attempt to deprecate the header causes more troubles than
solves potential portability issues, and provide our jemalloc
extensions.

PR: 155429
Reviewed by: imp, jhibbits, dab, hselasky, philip, emaste, jilles
Exp-run by: antoine (PR 245366)
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D24297

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.

Traditionally work in the -traditional case.

Submitted by: joerg

Resume deorbit burn sequence for <malloc.h>. Inspection of my make logs
reveals no programs in the standard build which hit the previous warning
message. This change will NOT be merged to 4-stable.

This file is deprecated not "obsoleted".

By Bruce and Joerg suggestions and by looking into June version
of NetBSD simple #include <stdlib.h> into malloc.h
Put #warning that this file is obsoleted ( by Joerg suggestion)

Add malloc.h for better SYSV/Linux compatibility like most
providers (like SUN f.e.) does.
malloc.h have comment about its SYSVism