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
git-svn-id: svn+ssh://svn.openpam.org/svn/openpam/trunk@9 185d5e19-27fe-0310-9dcf-9bff6b9f3609