etc: remove leftover leading empty comments, blank lines

Remove leftover empty leading comments/blank lines that had been
spacers between $FreeBSD$ and the following content in config files
in src/etc.

Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D41548

Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

etc: Automatically generate BSD.lib${libcompat}.dist lists

Note that each libcompat still has its own file that must exist.

Reviewed by: brooks, jhb
Differential Revision: https://reviews.freebsd.org/D41182

libsoft: Remove support for installing libsoft

Remove the infrasturcture needed to create the libsoft directories.

Sponsored by: Netflix

pkgbase: Create a FreeBSD-mtree package

And put the mtree binary and files in it.
Useful to create small mfsroot using /etc/rc.d/var without
having to install FreeBSD-utilities.

MFC after: 2 weeks
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D33442

Re-add BSD.coverage.dist install

This was an accidental mismerge in r321458 (MFC from ^/head)

Install BSD.coverage.dist if MK_COVERAGE == no

This file is basically the same as BSD.debug.dist -- the only different is the
prefix.

Unconditionally install etc/mtree/BSD.debug.dist again

r279248 unconditionally installed BSD.debug.dist for ease-of-developer-use.
Restore the previous behavior.

While here, add a comment to note that this is intentional to avoid accidental
future removal.

MFC after: 2 months
MFC with: r321444

Remove groff from base

All manpages in base are now compatible with mandoc(1), all roff documentation
will be relocated in the doc tree. man(1) can now use groff from the ports tree
if it needs.

Also remove checknr(1) and colcrt(1) which are only useful with groff.

Approved by: (no objections on the mailing lists)

Add libsoft to the tree, just like lib32.

Handle lib32 files during delete-old* when MK_LIB32=no.

Extend OptionalObsoleteFiles.inc to delete all lib32 files when MK_LIB32 is
set to no on a system that previously had lib32 libraries installed.

Also, to prevent "make delete-old-dirs" from always deleting lib32 directories
after an installworld, move the lib32 subtree to its own mtree file that only
gets applied when MK_LIB32=yes.

Test: Ran "make delete-old" and "make delete-old-libs" on a system that never
had MK_LIB32 enabled, and on a system where MK_LIB32 was enabled and later
disabled. Did this both on amd64 and powerpc64.

Test: Ran "make tinderbox" without errors.

Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D3923

Use src.opts.mk in preference to bsd.own.mk except where we need stuff
from the latter.

Install BSD.tests.mtree when MK_TESTS is yes.

Problem found by jhb@.

Approved by: rpaulo (mentor)

Fix up typos from r255963 in mtree Makefile. BSD.debug.dist should be
iterated if present, and remove a stray .endif.

Approved by: re (gjb)

Odds and ends left over from BIND and unnoticed because they didn't
affect 'make universe'.

Approved by: re (gjb)

Add a new knob WITH_DEBUG_FILES to control the building of standalone
debug files for userland programs and libraries. The "-g" debug flag
is automatically applied when WITH_DEBUG_FILES is set.

The debug files are now named ${prog}.debug and ${shlib}.debug for
consistency with other systems and documentation. In addition they are
installed under /usr/lib/debug, to simplify the process of installing
them if needed after a crash. Users of bsd.{prog,lib}.mk outside of the
base system place the standalone debug files in a .debug subdirectory.
GDB automatically searches both of these directories for standalone
debug files.

Thanks to everyone who contributed changes, review, and testing during
development.

Flesh out WITHOUT_GROFF support to DTRT.

A full featured groff is required during buildworld, so build it always
and don't rely on it being present on the host system.

vgrind(1) is tightly coupled to a roff processor and will not be
built/installed when groff is disabled. Also much of the roff'ed
documentation under share/doc will not be built/installed when
WITHOUT_GROFF is defined.

Reviewed by: ru (partial)

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.

Update etc/mtree/Makefile:
There is no longer BSD.{local,x11-4,x11}.dist mtree files.
There is a BSD.sendmail.dist mtree file.

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

Reimplementation of world/kernel build options. For details, see:

http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html

The src.conf(5) manpage is to follow in a few days.

Brought to you by: imp, jhb, kris, phk, ru (all bugs are mine)

Start the dreaded NOFOO -> NO_FOO conversion.

OK'ed by: core

For variables that are only checked with defined(), don't provide
any fake value.

Hook the BIND.* files up to the build.

This file is about to get some optional bits, so line up the parts of
the FILES variable one line at a time.

This should be a whitespace change only.

Reviewed by: ru

Added this makefile. This is not attached to the build yet. I often
install parts of /etc manually and it helps to have a makefile for
each subdir even if the main makefile doesn't invoke it.