Specify SANITIZER_RENAME_SYMBOL in chpass

Rename local versions of getpwent getpwnam getpwnam_r getpwuid getpwuid_r
(all of the symbols are namespaced) in order to remove symbol clash with
libc.

This program uses code directly from libc.

branches: 1.15.74;
Add new Makefile knob, USE_FORT, which extends USE_SSP by turning on the
FORTIFY_SOURCE feature of libssp, thus checking the size of arguments to
various string and memory copy and set functions (as well as a few system
calls and other miscellany) where known at function entry. RedHat has
evidently built all "core system packages" with this option for some time.

This option should be used at the top of Makefiles (or Makefile.inc where
this is used for subdirectories) but after any setting of LIB.

This is only useful for userland code, and cannot be used in libc or in
any code which includes the libc internals, because it overrides certain
libc functions with macros. Some effort has been made to make USE_FORT=yes
work correctly for a full-system build by having the bsd.sys.mk logic
disable the feature where it should not be used (libc, libssp iteself,
the kernel) but no attempt has been made to build the entire system with
USE_FORT and doing so will doubtless expose numerous bugs and misfeatures.

Adjust the system build so that all programs and libraries that are setuid,
directly handle network data (including serial comm data), perform
authentication, or appear likely to have (or have a history of having)
data-driven bugs (e.g. file(1)) are built with USE_FORT=yes by default,
with the exception of libc, which cannot use USE_FORT and thus uses
only USE_SSP by default. Tested on i386 with no ill results; USE_FORT=no
per-directory or in a system build will disable if desired.

use CPPFLAGS.getpwent.c=... to set file-specific cpp flags

Build custom getpwent.o only if USE_YP==no. Otherwise, chpass will not
get the current passwd entry from NIS. Problem reported by Stephen M. Jone
on tech-net.

makefile delint. use NETBSDSRCDIR as appropriate

branches: 1.11.2;
Split the notion of building Hesiod, Kerberos, S/key, and YP
infrastructure and using that infrastructure in programs.

* MKHESIOD, MKKERBEROS, MKSKEY, and MKYP control building
of the infratsructure (libraries, support programs, etc.)

* USE_HESIOD, USE_KERBEROS, USE_SKEY, and USE_YP control
building of support for using the corresponding API
in various libraries/programs that can use it.

As discussed on tech-toolchain.

use CPPFLAGS instead of CFLAGS

branches: 1.9.2;
find "namespace.h" ...

Back out the .PATH.c changes. The .depend problem (and others)
will be fixed using the new .NOPATH make feature instead.

Use .PATH.c: ...

Updated to use new password file functions in libutil.
From Greg Hudson <ghudson@MIT.EDU>.

merged with 4.4Lite

Patch from Giles Lean to make compilation flags more consistent.

Add RCS indentifiers.

Add YP support.

branches: 1.1.1;
Initial revision