JIT VM updated
Client side Env updated
Fix exporting Env callback symbols
The way runtime data is passed to jit'ed contract changed
Change Env functions first argument type to opaque Env*
Update VM gas counter after execution
Old files removed
Simplify JIT logs
Change the way memory is passed to sha3 Env function
Remove Env* param from env_sha3 function (not needed)
Old code removed
Rename sload, sstore & sha3 Env functions