* NEW: Switch to JIT compiler if available, and make it able to talk to gb.jit.
* BUG: GP must be NULL for new void stack frames.

[COMPILER]
* NEW: 'Fast' keyword means the class should be JIT-compiled.

[GB.JIT]
* NEW: JIT Compiler.



git-svn-id: svn://localhost/gambas/trunk@4759 867c0c6c-44f3-4631-809d-bfa615b0a4ec