Tidy up how __sigaction14_sigtramp.c is added to SRCS.

branches: 1.20.4;
define and use LIBCDIR in terms of .CURDIR. fixes compat/lib/libc build.

G/c KMSRCS and KMINCLUDES now that we have common/lib/libc

sigtramp1 moved to compat

Don't use 'm4' here. Use $TOOL_M4 instead.

Add current directory to inlcude pathes as it needed for generated assym.h.

Change longjmp to use setcontext instead of sigreturn14. Change setjmp
to use symbolic offsets via assym.h

Siginfo libc changes for alpha. Approved by thorpej@netbsd.org.

Enable the libc-provided signal trampoline. The old __sigaction14
entry point has been replaced by the new __sigaction14() which is a
wrapper around the __sigaction_sigtramp system call (which is itself
not directly exposed outside of libc).

No shared library version change is necessary; no new symbols
are exposed outside of libc.

Drink ALL the Kool-Aid.

(Move -mieee from lib/ to bsd.*.mk; new var MKIEEEFP defaults to yes.)

On Alpha, build libc and libm with -mieee ... A metric crapload
of 3rd party software expects this.

XXX TODO: consider libm-fast for alpha that is not -mieee. Possibly
determine -mieee or not at run-time based on a bit in the executable
headers.

branches: 1.10.12;
Move the bswap functions from libutil to libc (this bups the
minor of libc and the major of libutil). For little-endian architectures
merge the bnswap() assembly versions with nto* and hton* using symbols
aliasing. Use symbol renaming for the bswap function in this case to avoid
namespace pollution.
Declare bswap* in machine/bswap.h, not machine/endian.h. For little-endian
machines, common code for inline macros go in machine/byte_swap.h
Sync libkern with libc.
Adjust #include in kernel sources for machine/bswap.h.

add memmove.S to libkern.

Copy up bcopy.S and memcpy.S.

LintAlpha* have been removed.

branches: 1.6.2;
Simplify how division and remainder assembly source is generated
from divrem.m4.

dd a bunch of files to LSRCS, which provide lint stubs for the functions
defined by machine-dependent assembly code.

copy neither DEFS.h (it no longer exists) nor SYS.h (it's never been
necessary in libkern) to libkern any longer.

add an assembly version of ffs().

add assembler versions of the byte swap macros (only compile ntoh and
hton variants, not byte_swap variants, which are just included), and
copy them to libkern when appropriate.

libc support for the alpha. more functions should be written in assembler,
but that's optimization. 8-)