[D-runtime] [D-Programming-Language/druntime] 46e85e: add cmath2

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/druntime
  Commit: 46e85efd20e7554d4ba1368df5e77439d7d2d611
      https://github.com/D-Programming-Language/druntime/commit/46e85efd20e7554d4ba1368df5e77439d7d2d611
  Author: Walter Bright <walter at walterbright.com>
  Date:   2012-10-08 (Mon, 08 Oct 2012)

  Changed paths:
    M win64.mak

  Log Message:
  -----------
  add cmath2