remove obsolete NOTICE files superceded by /NOTICE

Merged in feature/NetBSD/arm (pull request #13)

NetBSD/arm support

Approved-by: Charles Forsyth

Added missing floating-point register routines for little-endian MIPS

NetBSD/arm: initial support

This is more or less mechanical merge of existing NetBSD code and
ARM-specific bits from Linux/arm files.

do not use update variant of fp status store

Merged in nbuwe/inferno-os/NetBSD/powerpc (pull request #10)

NetBSD/powerpc

Approved-by: Charles Forsyth <charles.forsyth@gmail.com>

Merged in yk/inferno-os/AIX-power (pull request #17)

AIX-power port

Approved-by: Charles Forsyth <charles.forsyth@gmail.com>

Use pthreads instead of rthreads on OpenBSD and add back FPU support

add AIX/power port

Use <machine/asm.h> macros.

Don't use with-update variant to store FPSCR as the code never reverts
the update and hence the stack pointer becomes out of whack.

Provide asm version of getcallerpc().

Copied from Linux version. Fix lwz mnemonic and use <machine/asm.h> macros.

Move fpuctl.h stuff into lib9, like on Linux. Inline asm version is
probably mis-optimized by modern gcc, but I didn't bother investigating.

move setfcr to lib9

new get/setfcr for powerpc

move setfcr to lib9

move fp control to lib9

reintroduce setfcr-MacOSX-386.c, with 387 instructions

correct instructions for USEVFP mode

remove Hp-s800

remove hp-s800

new file

use target-dependent setfcr

revert to 626 to undo unintended push