the LDADD/DPADD to lose the -lpam, and causing openpam_dynamic() to fail
due to "openpam_get_options" being undefined.
This would cause obscure console log messages like:
openpam_dynamic(): No error: 0
openpam_load_module(): no pam_unix.so found
and other helpful messages which are no help in diagnosing the problem.
Fortunately this change was not mfc'ed to 9.x, it isn't broken there.