[btcsuite/btcd] b16064: added getwalletinfo cmd

[drazisil]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcd
  Commit: b1606447b55a1a4d921378ee6466111df3c04632
      
https://github.com/btcsuite/btcd/commit/b1606447b55a1a4d921378ee6466111df3c04632
  Author: drazisil <jwbec...@gmail.com>
  Date:   2015-07-24 (Fri, 24 Jul 2015)

  Changed paths:
    M btcjson/walletsvrcmds.go
    M btcjson/walletsvrcmds_test.go

  Log Message:
  -----------
  added getwalletinfo cmd