[parrot/parrot] 6c80b4: prepare ChangeLog for 6.4.0

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/parrot/parrot
  Commit: 6c80b4d96a1f155823439bd741168df879dded1d
      https://github.com/parrot/parrot/commit/6c80b4d96a1f155823439bd741168df879dded1d
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2014-05-20 (Tue, 20 May 2014)

  Changed paths:
    M ChangeLog

  Log Message:
  -----------
  prepare ChangeLog for 6.4.0