[phobos] [D-Programming-Language/phobos] a20b01: more Win64 varargs issues

[GitHub]

  Branch: refs/heads/phobos-1.x
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: a20b018dd484768130621b44a97ee33b22532abf
      https://github.com/D-Programming-Language/phobos/commit/a20b018dd484768130621b44a97ee33b22532abf
  Author: Walter Bright <walter at walterbright.com>
  Date:   2012-09-22 (Sat, 22 Sep 2012)

  Changed paths:
    M internal/gc/gc.d
    M std/format.d

  Log Message:
  -----------
  more Win64 varargs issues