distrib/sets/lists: Add a blank comment line between RCS id and body.

This serves as a buffer between RCS id changes and other changes to
the set lists, in an attempt to reduce the pain of merge conflicts
around mass set list changes.

No functional change intended.

branches: 1.14.4;
First try (certainly wrong for many builds) to add sysinst catalog files.

Punt - backout sysinst message catlogs

Sigh - move sysinst catalog files (which differ per arch, ouch!)
to md lists.

branches: 1.11.2;
Sort entries in strcmp order.

Make sure fdformat is on m68k (even sun2)

branches: 1.9.6; 1.9.12; 1.9.16;
Build and install edlabel based on MACHINE_ARCH not MACHINE

branches: 1.8.2;
Reorganize lists for MD modules:
- move MD module files from md.* into separate module.* lists
- make those module lists per MACHINE_CPU or MACHINE_ARCH,
rather than per MACHINE

Tested on several ports.

XXX maybe we should also move usr/tests/modules/k_helper/k_helper.kmod
XXX from lists/tests/mi to lists/tests/module.mi and disable it on evbppc.

Move the exec_elf32 module into MD files.

branches: 1.6.36;
reformat whitespace

Significant overhaul of how the sets are used:

* Add an optional third field to the sets file which is a list of
comma separated keywords that control if the line is printed.
Currently supported keywords
kerberos4 ${MKKERBEROS4} != no
kerberos ${MKKERBEROS} != no
lint ${MKLINT} != no
obsolete ${obsolete} != 0.
In this case, non obsolete files are not printed.
(This will allow future support for builds with variables such as
MKHESIOD and MKYP set to "no".)

* Use sh(1)'s getopts where appropriate, and otherwise cleanup the
various scripts.

* Move defaults for sets.subr from sets.defaults into sets.subr.
Move replicated code for determining stuff such as shlibs type
from various scripts into sets.subr.

* Merge the obsolete.*, krb.*, krb4.* and lint.* into the appropriate
main lists with the relevant third field keyword(s).

* Clean up the handling of rescue.* files makeflist.
* Move all md.* and ad.* /rescue/... files into their
own list files.

tweak the ./rescue entries

obsolete /usr/mdec/installboot

Added sun2 distrib files.