[Pam-developers] pam_start_confdir implementation to address issue #143

The attached patch adds a new pam_start_confdir() API call to address the issue #143. It allows setting a directory from which the service PAM configuration is to be loaded. Please review. -- Tomáš Mráz No matter how far down the wrong road you've gone, turn back. Turkish proverb [You'll know whether the road is wrong if you carefully listen to your conscience.]