[conformal/btcd] 34657d: Add the useragent to the new valid peer message.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcd
  Commit: 34657d43d9c78febb8f94534bb62ceb709841198
      
https://github.com/conformal/btcd/commit/34657d43d9c78febb8f94534bb62ceb709841198
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-01-07 (Tue, 07 Jan 2014)

  Changed paths:
    M blockmanager.go

  Log Message:
  -----------
  Add the useragent to the new valid peer message.

This commit modifies the new valid peer message to display the useragent.
Previously this information was only available by setting the PEER
subsystem debuglevel to debug or lower.

This was prompted by #64.