Refactor GetBlockCmd type and NewGetBlockCmd() function to follow the bitcoin json RPC verbosity format for getblock, which uses 0, 1, or 2 as parameters rather than a boolean true or false.
Refactor GetBlockCmd type and NewGetBlockCmd() function to follow the bitcoin json RPC verbosity format for getblock,
which uses 0, 1, or 2 as parameters rather than a boolean true or false.

ltcsuite/ltcd,btcsuite/btcd,davecgh/btcd,ltcsuite/ltcd,dajohi/btcd,tb00/btcd,davecgh/btcd,btcsuite/btcd,dajohi/btcd,tb00/btcd,dajohi/btcd