EIP-150/EIP-114 63/64 gas rule not implemented

[juli]

RSKj implements EIP-150 partially. Gas cost of opcodes was updated to EIP-150 values but EIP-114 was not implemented.

From EIP-150:

"...Additionally, EIP 114 is introduced because, given that we are making the cost of a call higher and less predictable, we have an opportunity to do it at no extra cost to currently available guarantees, and so we also achieve the benefit of replacing the call stack depth limit with a "softer" gas-based restriction, thereby eliminating call stack depth attacks as a class of attack that contract developers have to worry about and hence increasing contract programming safety. Note that with the given parameters, the de-facto maximum call stack depth is limited to ~340 (down from ~1024), mitigating the harm caused by any further potential quadratic-complexity DoS attacks that rely on calls..."