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 t

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@

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close on exec fixes:
- open + fcntl -> open O_CLOEXEC
- configuration database file descriptors that can stay open are now opened
fopen(db, "re")

Remove clause 3 and 4 from TNF licenses

fix incomplete initializers

WARNS=4

Overhaul the use of nsdispatch(3) by public APIs so that the back-end
methods use va_list in a manner that is directly related to the public API.

This makes it much easier to write dynamic nsswitch

Overhaul the use of nsdispatch(3) by public APIs so that the back-end
methods use va_list in a manner that is directly related to the public API.

This makes it much easier to write dynamic nsswitch backends for the
getusershell(3) (et al) functions.

Per my proposal on tech-userlevel in September 2004.

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

Patches provided by Joel Baker in PR 22280, verified by myself.

__STDC__ is always defined on NetBSD.

Passing "char" values to ctype(3) functions is problematic.
If an argument of a ctype function is outside "unsigned char"
and if it is not EOF, the behavior is undefined.

The isascii(3) is the sole

Passing "char" values to ctype(3) functions is problematic.
If an argument of a ctype function is outside "unsigned char"
and if it is not EOF, the behavior is undefined.

The isascii(3) is the sole exception of above and it was used to
be used to check a value was valid for other ctype functions in
ancient systems. On modern systems, the ctype functions take
all values of "unsigned char", and this check is obsolete and
even wrong for non-ASCII systems. However, we leave the isascii()
untouched for now, so as not to change the current behavior.

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Delint.
Remove trailing ; from uses of __weak_alias(). The macro inserts this if
needed.

* check the error return of sl_init() and sl_add()
* minor KNF

specifically include stdarg/varargs.h

convert from hes_*() -> hesiod_*()

- avoid unitialized warning.
- remove unreachable code.
- add ARGSUSED
- linted for const castaway.

* `passwd' defaults to `compat', and `passwd_compat' defaults to `nis'
* constify ns_dtab defs

convert to new nsdispatch(3)

pull nsswitch up to main branch

delint

delint

Make these compile without __AUDIT__.

const poisoning.

remove obsolete register declarations

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will

If port provides __weak_alias(), provide an Standard C and POSIX pure
identifier namespace by renaming non standard functions and variables
such that they have a leading underscore. The library will use those
names internally. Weak aliases are used to provide the original names
to the API.

This is only the first part of this change. It is most of the functions
which are implemented in C for all NetBSD ports. Subsequent changes are
to add the same support to the remaining C files, to assembly files, and
to the automagically generated assembly source used for system calls.
When all of the above is done, ports with weak alias support should add
a definition for __weak_alias to <sys/cdefs.h>.

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Fix RCSID's

update from Lite, with local changes. fix Ids, etc.