[btcsuite/btcwallet] 845545: Add Kind enum to NextAddress request.

[Josh Rickmar]

  Branch: refs/heads/master
  Home:   https://github.com/btcsuite/btcwallet
  Commit: 8455454ed5ca710d3973a340ddf3f72aa53a501b
      
https://github.com/btcsuite/btcwallet/commit/8455454ed5ca710d3973a340ddf3f72aa53a501b
  Author: Josh Rickmar <jr...@companyzero.com>
  Date:   2016-02-23 (Tue, 23 Feb 2016)

  Changed paths:
    M rpc/api.proto
    M rpc/rpcserver/server.go
    M rpc/walletrpc/api.pb.go

  Log Message:
  -----------
  Add Kind enum to NextAddress request.

Fixes #371.