Pam is optional -- should be able to eliminate it with a configure flag or something similar.

Pity that 2.2.xx won't allow multiple mounts -- I hadn't noticed that limitation before, and a brief glance at fs/super.c didn't promise much hope of a simple patch to "fix" that limitation.

So, you're back to LD_LIBRARY_PATH again.

EDIT: or you could try some really wretched hack like changing the regular mount location to a point within the chroot tree, and using a symlink to put it back where everything else expects to find it.

cheers