Experimental ``suffix rules + subdirectories'' build support (-S).

Document previously secret -d debug option. Bump date.

Fix two typos.

Document -M.

branches: 1.15.2;
Sort SYNOPSIS. Bump date for previous.

Add two new options, -U and -D, that can be used to define "makeoptions"
on the config command line. While there, rename the undocumented (internal)
parser debug option from -D to -d.
Discussed on tech-toolchain.

branches: 1.13.2; 1.13.8;
Use more markup. Wording.

bump date.

make config -x look at the booted kernel first.

branches: 1.10.6;
New sentence, new line.

.Sx to refer to a section, and add one ref to the lint stuff for clarity.

Use Sx. Remove superfluous .Pp.

.sp -> .Pp

branches: 1.6.14;
Improve the structure of the man page to make it more usual, with the hope
that people might actually read it some day. Yeah, I know, dream on, dream
on.

Thanks schmonz@ for a quick english check.

branches: 1.5.4;
Bump date for previous (year was wrong).

Introduce a new option to config(1): -L. What it does is takes a regular
configuration file (although it is meant to be used mostly with
std.${ARCH}), and prints out a configuration file that includes it and
select every single option and parameter, and define an instance for every
single possible attachment. IOW, selects everything, into a would-be
"LINT" config.

The resulting config really isn't meant to be runnable, but should be
somewhat buildable on most archs. It still needs adjustments because some
options are peculiar (e.g., ACPI_DSDT_FILE wants an existing file as its
value), so it's not yet possible to do "config -L; config; build" in an
automated way.

Reference config(5). Noted by perry@.

XXX options(4), config(9) and probably some others still have to be changed
XXX a bit. A chaque jour suffit sa peine.

branches: 1.2.2;
config(1), not (8)

config and genassym are not sysadmin tools, they are development tools.
As such, they don't belong in /usr/sbin, but rather /usr/bin. Move them
there.