Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

- Clean up function calling conventions.
- Be consistent about what we call our softc.
- Minor formatting.
- Add some register definitions gleaned from NetBSD/Linux.

Repo copy i82586.h to dev/ic/i82586.h.

This file currently is very ie specific, but I have plans to change
that...

$Id$ -> $FreeBSD$

Fixed 10 out of 40 lines of -Wcast-qual warnings/errors. 3 lines were
for old confusion of `volatile char *' with `volatile caddr_t'. 7 lines
were for not being careful about aligning pointers to volatiles.

Use [u]intptr_t instead of [unsigned] long to convert and/or represent
pointers.

This finishes fixing conversions between pointers and integers of
possibly different sizes in GENERIC.

Support compiling with `gcc -ansi'.

Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.

Make the long-awaited change from $Id$ to $FreeBSD$

This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore. This update would have been
insane otherwise.

Staticized an inline function. All inlines in kernel headers should be
static. The function shouldn't be here anyway. It is driver dependent,
while `ic' files are supposed to only depend on the IC.

Cleanup, make things static.

i82586 support file for Garrett Wollmans ie driver