[Truffle] We need to stop passing counts after the first method that isn't a block.
[Truffle] Give array builders a chance to modify the store after the final element is added.
[Truffle] Convert to the correct array type after the uninitialised builder finishes.
[Truffle] Clear a few things for compilation.
[Truffle] Make some context-global fields final.
[Truffle] Special cases for Fixnum#** and cut off Bignum#**.
[Truffle] Move most of BigInteger onto the slow path.
[Truffle] Remove some warnings.