[conformal/btcd] 5d3fcc: Handle tor addresses in addrmanager.

[Owain G. Ainsworth]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcd
  Commit: 5d3fcc660e1f213296298b0e81ae6cb2f9ec0e65
      
https://github.com/conformal/btcd/commit/5d3fcc660e1f213296298b0e81ae6cb2f9ec0e65
  Author: Owain G. Ainsworth <o...@conformal.com>
  Date:   2013-11-19 (Tue, 19 Nov 2013)

  Changed paths:
    M addrmanager.go

  Log Message:
  -----------
  Handle tor addresses in addrmanager.

Both GroupKey and Tor() needed amending for tor addresses, filling in some
TODOs.

Closes #36.
Closes #37