Complete in the sense that all POSIX *locale(3) and *_l(3) functions
are included, but in OpenBSD, we of course only really care about
LC_CTYPE and we only support ASCII and UTF-8.
With important help from kettenis@, guenther@, and jca@.
Repeated testing in ports bulk builds by naddy@.
Additional testing by jca@, sebastia@, dcoppa@, and others.
OK kettenis@ dcoppa@, and guenther@ on an earlier version.
Riding guenther@'s libc/librthread major bump.

update the NULL definition for C++11.  OK deraadt@ guenther@ kettenis@

required for libc++
ok guenther afresh1

of NULL was incorrect for c++ compilers that aren't
gcc (or pretend to be gcc like clang).
ok miod@

Kernel and bootblocks still use the old 0L value until all the NULL abuses
in the code are fixed.

rescinded 22 July 1999.  Proofed by myself and Theo.

OK mickey@ and discussed with deraadt@

__null is a magic constant of integral type that converts to a null pointer
as should be, but warns for ambiguity when used to resolved an overload
between an integral type and a pointer type.

entire trees for testing anyway, I might as well do this intrusive touching
of include files now.  Added openBSD tags.