Changeset 9 in openpam for trunk/lib/openpam_ttyconv.c

Add openpam_ttyconv(), a simple tty-based conversation function.
Prototype it in the new <security/openpam.h> header. Move the
prototype for openpam_log() there too (as well as the log level
constants) so modules and applications can use it if they want to.
Have lib/openpam.h include <security/openpam.h>.

Sponsored by: DARPA, NAI Labs