[conformal/btcwallet] cb7174: Use an unbounded queue for waiting notifications.

[Josh Rickmar]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcwallet
  Commit: cb717455c7d059cc5763dc096fd5aff056e69b65
      
https://github.com/conformal/btcwallet/commit/cb717455c7d059cc5763dc096fd5aff056e69b65
  Author: Josh Rickmar <jr...@conformal.com>
  Date:   2014-06-17 (Tue, 17 Jun 2014)

  Changed paths:
    M rpcclient.go

  Log Message:
  -----------
  Use an unbounded queue for waiting notifications.

Fixes a hang where a send on the notification chan can block due to
the queue being filled, and the current running notification making a
blocking call to the rpc client.

Fixes #100.