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.

btcjson/chainsvrcmds.go

@@ -130,8 +130,7 @@ func NewGetBestBlockHashCmd() *GetBestBlockHashCmd {
 // GetBlockCmd defines the getblock JSON-RPC command.
 type GetBlockCmd struct {
 	Hash      string
-	Verbose   *bool `jsonrpcdefault:"true"`
-	VerboseTx *bool `jsonrpcdefault:"false"`
+	Verbosity *int `jsonrpcdefault:"0"`
 }
 
 // NewGetBlockCmd returns a new instance which can be used to issue a getblock
@@ -139,11 +138,10 @@ type GetBlockCmd struct {
 //
 // The parameters which are pointers indicate they are optional.  Passing nil
 // for optional parameters will use the default value.
-func NewGetBlockCmd(hash string, verbose, verboseTx *bool) *GetBlockCmd {
+func NewGetBlockCmd(hash string, verbosity *int) *GetBlockCmd {
 	return &GetBlockCmd{
 		Hash:      hash,
-		Verbose:   verbose,
-		VerboseTx: verboseTx,
+		Verbosity: verbosity,
 	}
 }