[conformal/btcjson] b5db9f: Add BIP0023 basic pool extension fields.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcjson
  Commit: b5db9fb48569b906a526fa5242cbf8d30e2aa07e
      
https://github.com/conformal/btcjson/commit/b5db9fb48569b906a526fa5242cbf8d30e2aa07e
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-06-27 (Fri, 27 Jun 2014)

  Changed paths:
    M jsoncmd.go
    M jsonresults.go

  Log Message:
  -----------
  Add BIP0023 basic pool extension fields.

This commit adds the optional basic pool extension fields defined by
BIP0023 to the GetBlockTemplateResult GetBlockTemplateCmd types.

ok @jcvernaleo