[arch-dev-public] Deprecation of pam_unix2

Hi team, During libnsl rebuild heftig pointed out that we are shipping pam_unix2 that has been dead upstream for a long time (to the point that it's being built from our own mirror now). I'm also unwilling to spend time to fix its configure.ac to make it build with libnsl and libtirpc correctly. Unless someone's life depends on it, I'd like to drop it from repositories. Bartłomiej