common/studpath.py: url_to_jailpaths - The "jail" path returned is now absolute instead of relative to the common jails dir. Reason: Much less specific to our system and easier to check that it's in the correct directory than explain all over the place what the jails root is. common/interpret.py: Updated comments to the above effect. trampolines: Accept absolute jails and check their root instead of doing a path join.