PR/56453: Wataru Ashihara: config(1): Assertion fails in config -L
Only compare pointers when one is found.

- add RCSID's
- fix -Wconversion (except scanner)

branches: 1.14.10;
Use C89 function definitions

Remove the NV_OBSOLETE flag, which is no longer needed. While here,
update an outdated comment about condition expressions.

Give option definitions their own data structure instead of using nvlists.
(and using messy hacks to make up for nvlists not holding quite the right
things)

Introduce type-safe wrappers around the hash tables. Use them for a
selected set of tables affected by the next nvlist cleanup in the
works.

Move locator lists to their own data structure. This can use more tidying;
it is not clear to me at the moment what the "string" and "num" values
pushed around in locator lists are supposed to actually mean.

Create a new type struct attrlist to manage lists of attributes,
instead of using struct nvlist.

(struct nvlist holds lists (or trees!) of semi-arbitrary stuff with no
structure and almost no type safety; it should go away.)

branches: 1.8.6;
For {pseudo-,}devices, check if an instance of the pseudo or the considered
attachment of the device has already been done by the template config file.
If so, don't emit a line. Reported by John Nemeth.

rename nv_int -> nv_num and make it long long, so that dev_t will fit when
we change it.

Convert to new 2 clause license

branches: 1.5.6;
Some more licence clean up.

branches: 1.4.4;
Change the name of the resulting kernel binary, because "lint" confuses
our Makefiles. While there, add a couple comments to explain how all
attachments are found.

Add new syntaxic sugar to provide a value in lint (i.e., config -L)
configurations for defparams. It will be used _only_ by config -L.

This will greatly help automating tests with lint configurations,
hopefully.

Print pseudo-devices in their own section and print all of them (d'oh).

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.