[Chicken-hackers] [PATCH] Rework library loading to support conditional unit entry

[felix . winkelmann]

Hi!

After some serious testing and discussing a few of the changes with Evan,
we decided to merge this patch. I had some trouble applying it, since
it is somewhat old and my git skills are not the greatest, so he will just
push it, so please consider it signed-off.

Thanks a lot, Evan! This is a challenging patch, but it cleans up a lot of the
code and makes things effectively simpler, which is always good.


felix