Actually, two in one bug report. pam-abl 0.5 is out and it's home moved to sourceforge apparently (current homepage does not resolve) http://pam-abl.sourceforge.net/ Thanks you in advance.
@Gilles, if you use it, I'd welcome a maintainer for it. The new version (0.5.0) is built with CMake as well so I'm not very happy to deal with it.