Expose register difinitions for _STANDALONE.
Fix build failure in arch/luna68k/stand/boot.

Hide the register definitions that should eventually be removed (or prefixed
with _REG_ with #ifdef _KERNEL. This avoids conflicts with let's say PC in
<termcap.h>.

Remove __HAVE_PROCESS_XFPREGS and add the extra parameter for the size
of the fp save area to all the process_read_fpregs() and
process_write_fpregs() functions.
None of the functions have been modified to use the new parameters.
The size is set for all the writes, but some of the arch-specific reads
just pass NULL.
The amd64 (and i386) need variable sized fp register save areas in order
to support AVX and other enhanced register areas.
These functions are rarely called - so the extra argument won't matter.

branches: 1.18.4; 1.18.14; 1.18.18;
Remove clause 3 (UCB advertising clause) from the University of Utah
copyright. Confirmed by Mike Hibler, mike at cs.utah.edu - thanks!
Also, merge UCB and Utah copyright texts back into one, as they
originally were.

Extra verification by snj@.

branches: 1.17.100; 1.17.106; 1.17.108;
merge ktrace-lwp.

De-__P

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

branches: 1.14.2;
Merge the nathanw_sa branch.

branches: 1.13.20;
Define FP as a synonym for A6.

branches: 1.12.24;
Add prototypes for process_read_regs, etc. (fix warnings)

KERNEL -> _KERNEL

Add struct fpreg.

Rearrange struct reg to match what the rest of the world expects.

new RCS ID format.

HP300 -> M68K, and light trimming

Still need old #defines for now.

Implement `struct reg'.

Move #define of NIPCREG outside #fidef.

Ditto.

add rcsids to everything and clean up headers

branches: 1.1.1;
Initial revision