Boris,

> This changes set modifies the format of the compiled methods.
> This is *very* dangerous and I would therefore appreciate the
> opinions of our more experienced fellows.

Honestly, my gut feeling is not to mess around with compiled methods
unless you cannot avoid it. It would be much simpler if the system would
simply abandon the sources if it can't compress them in the range
expected. Sure, you loose the temps then but what they hey...

Cheers,
  - Andreas