Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Build lib/ with WARNS=6 by default.

Similar to libexec/, do the same with lib/. Make WARNS=6 the norm and
lower it when needed.

I'm setting WARNS?=0 for secure/. It seems secure/ includes the
Makefile.inc provided by lib/. I'm not going to touch that directory.
Most of the code there is contributed anyway.

Downgrade WARNS level for GCC 3.4.2.

style.Makefile(5) police
(I've tried to keep to the spirit of the original formatting)

Reviewed by: des

Moved SHLIB_NAME definition into one place.

Approved by: des

Switch to OpenPAM. Bump library version. Modules are now versioned, so
applications linked with Linux-PAM will still work.
Remove pam_get_pass(); OpenPAM has pam_get_authtok().
Remove pam_prompt(); OpenPAM has pam_{,v}{error,info,prompt}().
Remove pam_set_item(3) man page as OpenPAM has its own.

Sponsored by: DARPA, NAI Labs

Remove NO_WERROR, now that WARNS=n is gone.

WARNS=4 fixes. Protect with NO_WERROR for the modules that have
warnings that are hard to fix or that I've been asked to leave alone.

Big module cleanup.

Move common stuff into Makefile.inc, and tidy up all the Makefiles
as a result.

Build new modules.

Put a commented-out dependancy on libpam for the (shared) modules.
I can't bring this in just yet, as the dependancy (modules->libpam)
is reversed for the static case (libpam->modules).

MAN[1-9] -> MAN.

Use a unified libgcc rather than a seperate one for threaded and
non-threaded programs. This provides threaded programs with the
needed exception frame symbols.

parts submitted by: Max Khon <fjoe@iclub.nsu.ru>
PR: 23252

Restore INTERNALLIB.

Noticed by: bde,jdp

Add pam_radius.so manual page.

Reviewed by: jdp

Make it possible to use PAM in statically-linked applications.

This commit was generated by cvs2svn to compensate for changes in r41227,
which included commits to RCS files with non-trunk default branches.

Build structure for contribified Linux-PAM, plus some home-grown
modules for FreeBSD's standard authentication methods. Although
the Linux-PAM modules are present in the contrib tree, we don't
use any of them.

The main library "libpam" is composed of sources taken from three
places. First are the standard Linux-PAM libpam sources from the
contrib tree. Second are the Linux-PAM "libpam_misc" sources, also
from the contrib tree. In Linux these form a separate library.
But as Mike Smith pointed out to me, that seems pointless, so I
have combined them into the libpam library. Third are some additional
sources from the "src/lib/libpam" tree with some common functions
that make it easier to write modules. Those I wrote myself.

This work has been donated to FreeBSD by Juniper Networks, Inc.