[Constantinople] EIP 1234 Difficulty bomb delay and block reward adjustment

[holgerd77]

EIP 1234 Constantinople difficulty bomb delay and block reward adjustment.

Depends on ethereumjs/ethereumjs-block#53.

[holgerd77]

Hi @alextsg, just had a short look and would assume that the code in the VM regarding the miner reward doesn't need to be changed, didn't put much thought into it though.

Did you have a somewhat closer/deeper look and would you confirm that?

[alextsg]

@holgerd77 I referenced the implementation of EIP-649 (Metropolis Difficulty Bomb Delay and Block Reward Reduction) and saw that only the ethereumjs-block and ethereumjs-common libraries were updated so I assumed the same.

[holgerd77]

Difficulty bomb delay addressed in ethereumjs/ethereumjs-block#54, block reward adjustment implicitly handled through updated ethereumjs-common miner reward adjustment (self._common.param('pow', 'minerReward') in runBlock()), will close.