Update on inlining

[Bryce Kampjes]

There's been some progress on Exupery. The current task is inlining
methods that don't create blocks.

The last commit includes the ability to inline methods with arguments.

The remaining tasks are:
 * Accessing the literal frame from an inlined method
 * inlined self references
 * inlined super calls
 * inlined methods with temporaries
 * deoptimising inlined methods
 * updating the profilers to automatically inline methods.

After that it's time to add closure support to Exupery then inline
blocks.

Bryce