Preparing for Exupery 0.12

[bryce at kampjes.demon.co.uk]

I've decided to release what I've got. There's more than enough in
this release to justify releasing. The background compiler now runs
for about a hour. It'll still need some work before it is practical,
that's probably next.

This release
  * Has a background compiler that can be run for about a hour
  * Has many bug fixes
  * Merges in David and John's 32 bit clean work and makes Exupery
    32 bit clean.

Andy, when can you build a Window's VM?

Mathieu is planning on building a Mac VM.

To use the background compiler:

First initialise Exupery to prepare the code cache. This will
also clear out any currently compiled code.

   Exupery initialiseExupery

Then start the background compiler using the following expression.

   Exupery startBackgroundCompilation.

Then when done use the following to stop it.
   
   Exupery stopBackgroundCompilation.

Bryce