I updated and moved http://joyful.com/squeak/SqueakPackageNotes :

"This page tracks the status of selected Squeak packages in various 
Squeak images . In effect it's a small special-purpose bug tracker 
acting as a front end to the mantis tracker/package repositories/squeak 
wiki.

Each package has its own page containing entries for each image. Click 
in any table cell to edit these (tested in firefox). Entries beginning 
with "ok" or "included" will appear green. Use the form at the end to 
add packages."

FYI 55% of the packages tested seem to work with no problems in 3.8, and 
70% in 3.7u2.