Liberally sprinkle static around to get more symbols out of the
global namespace. A small bit of const poisoning in the TC code.

branches: 1.13.46;
make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.

gc sprintf; reduce local static usage of interrupt strings that are only
used once for autoconf printing.

branches: 1.11.2; 1.11.12; 1.11.16;
#include <sys/bus.h> instead of <machine/bus.h>.

- Use lwp_getpcb() on Alpha.
- Replace and clean struct user usage, slightly simplify some code parts.
- Include sys/user.h in MD proc.h .

Remove clause 3 and 4 from TNF licenses

branches: 1.8.2; 1.8.4;
Split the softc from the device_t for all lpt(4) variants and attachments
except the ppbus stuff (which doesn't compile) and ulpt(4) which is
unrelated and can be dealt with separately.

As usual, it comes with related cosmetic changes.

branches: 1.7.12; 1.7.16;
Merge the ppcoea-renovation branch to HEAD.

This branch was a major cleanup and rototill of many of the various OEA
cpu based PPC ports that focused on sharing as much code as possible
between the various ports to eliminate near-identical copies of files in
every tree. Additionally there is a new PIC system that unifies the
interface to interrupt code for all different OEA ppc arches. The work
for this branch was done by a variety of people, too long to list here.

TODO:
bebox still needs work to complete the transition to -renovation.
ofppc still needs a bunch of work, which I will be looking at.
ev64260 still needs to be renovated
amigappc was not attempted.

NOTES:
pmppc was removed as an arch, and moved to a evbppc target.

branches: 1.6.6;
Backout changes on lpt_jensenio.c rev 1.2.
lpt at jensenio doesn't seem to have a specific interrupt vector
but uses a normal EISA interrupt.

Fixes another part of PR port-alpha/36628 and PR port-alpha/20386.

branches: 1.5.22; 1.5.58; 1.5.64; 1.5.72; 1.5.74; 1.5.76; 1.5.78;
Use CFATTACH_DECL().

Declare all cfattach structures const.

Rather than referencing the cfdriver directly in the cfdata entries,
instead use a string naming the driver. The cfdriver is then looked
up in a list which is built at run-time.

branches: 1.2.2;
Rework the interrupt code, shaving some cycles off in the process.
Rather than an "iointr" routine that decomposes a vector into an
IRQ, we maintain a vector table directly, hooking up each "iointr"
routine at the correct vector. This also allows us to hook device
interrupts up to specific vectors (c.f. Jensen).

We can shave even more cycles off, here, and I will, but it requires
some changes to the alpha_shared_intr stuff.

branches: 1.1.2; 1.1.4; 1.1.8;
Code to support the DEC 2000/300 (DECpc AXP 150, a.k.a. "Jensen")
systems. Thanks to Gyenes Istvan for the rounds of testing.