[conformal/btcd] 14f81a: Add handler for notfound messages.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcd
  Commit: 14f81aa479022fcf6fdbe76a965730faf704a3e8
      
https://github.com/conformal/btcd/commit/14f81aa479022fcf6fdbe76a965730faf704a3e8
  Author: Dave Collins <da...@conformal.com>
  Date:   2013-10-15 (Tue, 15 Oct 2013)

  Changed paths:
    M peer.go

  Log Message:
  -----------
  Add handler for notfound messages.

For now, these are ignored, but ultimately they should be used to
re-request the missing inventory from another peer.