INTRODUCTION:
  pam_checkpassword:
  	This was a fairly quick hack to get qmail's qmail-pop3d working with PAM.
	It implements the PAM side of a protocol called `checkpasswd' which
	has similar aims to the PAM concept. This directory contains the pam
	module stuff, the subdirectory `checkpam' contains the PAMmed
	checkpassword utility.

SUMMARY:
  pam_checkpassword:
	Reads fd3 (from parent process) and sets PAM_USER and PAM_AUTHTOK to
		the first two null-terminated strings from fd3, then closes fd3
		and exits with success, unless something strange happened, when
		it fails.
	Options:
		* ignore_at  - In username, discard any `@' sign, and any trailing
			data.
		* set_maildir - If, in username, an `@' sign appears, set the envvar
			MAILDIR to `.', otherwise to `Maildir'.

	- Tim Baverstock <warwick@sable.demon.co.uk>
		v0.1 5 March 1997

BUGS:
Implements checkpassword. :)