undo, the right place for this is compat_defs.h

Provide a backward-compatible conditional define of O_CLOEXEC
for those systems which lack it, since these files are used in
tools builds.

make more descriptors that we open as close-on-exec

Update old-style definitions to ANSI, remove a couple of register
definitions along the way. Fixed gcc 4.1 build (thank you vax)

PR/45989: Martin Husemann: lint invocation does include -w only on i386

- turn lint -w for all the platforms after fixing the lint warnings.
- add _DIAGASSERTS() for casts that would assign values to types that
would not fit.
- change types, add casts
- change into ansii prototypes
- turn on _DIAGNOSTIC for libc (during current, to be eliminated for release
builds)

approved by core@

branches: 1.8.6;
According to Alexander Bluhm in tech-toolchain on 31 Jan 2009, the way
these files use __weak_alias causes build failures under OpenBSD,
because the OpenBSD __weak_alias macro expects the caller to supply a
semicolon, but the NetBSD __weak_alias macro supplies its own semicolon.

Attempt to fix this by avoiding the use of __weak_alias during a tools
build.

branches: 1.7.26; 1.7.30;
The weak alias macros can only work before namespace.h gets included because
when the strings get expanded we gain an _ from namespace.h. So define a
macro to point to the appropriate include file for the hash function, and
include the hash function later, from the .c file we always include. This
allows us to eliminate the hack of including namespace.h twice as well as
nbtool_config.h.

netbsd.org->NetBSD.org

back out the #ifdef _DIAGNOSTIC argument checks; too many people complained.
_DIAGASSERT() is still retained.

* use _DIAGASSERT() to check pointer arguments against NULL and file
descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.

the first two items result in the addition of code similar to the
following in various functions:

_DIAGASSERT(path != NULL)
#ifdef _DIAGNOSTIC
if (path == NULL) {
errno = EFAULT;
return (-1);
}
#endif

delint

- Liberal application of suggestions in /usr/share/misc/style.
- Don't use sed(1) to generate these files. The C preprocessor
is your friend.

Add MD4/MD5 routines to the C library, taken directly from FreeBSD's
"libmd".