put reallocarray() in the public namespace

reallocarray() will be part of the next POSIX release, see
https://austingroupbugs.net/view.php?id=1218

adapt an errno value to match POSIX expectations

put reallocarray() in the public namespace

reallocarray() will be part of the next POSIX release, see
https://austingroupbugs.net/view.php?id=1218

adapt an errno value to match POSIX expectations

As discussed on tech-userlevel

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arrange for tools build

Add bunch of missing includes of namespace.h in libc

The NetBSD Standard C Library uses internally some of its functions with
a mangled symbol name, usually "_symbol". The internal functions shall n

Add bunch of missing includes of namespace.h in libc

The NetBSD Standard C Library uses internally some of its functions with
a mangled symbol name, usually "_symbol". The internal functions shall not
use the global (public) symbols.

This change eliminates usage of the global changes of the following symbols:
- strlcat -> _strlcat
- sysconf -> __sysconf
- closedir -> _closedir
- fparseln -> _fparseln
- kill -> _kill
- mkstemp -> _mkstemp
- reallocarr -> _reallocarr
- strcasecmp -> _strcasecmp
- strncasecmp -> _strncasecmp
- strptime -> _strptime
- strtok_r -> _strtok_r
- sysctl -> _sysctl
- dlopen -> __dlopen
- dlclose -> __dlclose
- dlsym -> __dlsym

Sponsored by <The NetBSD Foundation>

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remove recallocarray

add recallocarray

Revert prior, no idea why it was causing me problems, but it no longer does.

Stop calling reallocarr and just do the same bounds checking but without
messing around with copying pointers which was causing ssh to crash.

reallocarray(3) cleanup

Add missing NetBSD CVS Id
Don't define twice _OPENBSD_SOURCE

Behave in an OpenBSD compatible way for 0.

use reallocarr()

Move reallocarray under _OPENBSD_SOURCE where it belongs.

Add and use reallocarray() to prevent a multiplication overflow in allocation.
Reported by Guido Vranken, thanks!