[phobos] [D-Programming-Language/phobos] a3d4c6: merge D2 druntime pull #381

[GitHub]

  Branch: refs/heads/phobos-1.x
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: a3d4c646f2dd993d37c25b44a931767034fdaace
      https://github.com/D-Programming-Language/phobos/commit/a3d4c646f2dd993d37c25b44a931767034fdaace
  Author: Walter Bright <walter at walterbright.com>
  Date:   2013-01-13 (Sun, 13 Jan 2013)

  Changed paths:
    M std/thread_helper.d

  Log Message:
  -----------
  merge D2 druntime pull #381