use LIBDPLIBS+= not =.

don't set LIBDPLIBS in libpam/modules/Makefile - it is not necessary
and it interferes with the compat lib build. don't use LIB_ROOT_DIR.

pam_group needs libutil & libcrypt

- NetBSD build glue
- Warning fixes
- RCSID's

- Import freebsd's version of libpam as of today (20041212).
- Did not import opie, passwdqc, tacplus. We need to decide what to do
with them.
- Imported radius and ssh, although they will not work

- Import freebsd's version of libpam as of today (20041212).
- Did not import opie, passwdqc, tacplus. We need to decide what to do
with them.
- Imported radius and ssh, although they will not work until we
import libradius and re-structure our tree to install libssh.

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