[phobos] [D-Programming-Language/phobos] ac84cb: add initOnce

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: ac84cbeb5502f614757cba8317b7a1e247cc6bd0
      https://github.com/D-Programming-Language/phobos/commit/ac84cbeb5502f614757cba8317b7a1e247cc6bd0
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-01-05 (Mon, 05 Jan 2015)

  Changed paths:
    M std/concurrency.d

  Log Message:
  -----------
  add initOnce

- uses double-checked locking (the correct one)

- minimal overhead and simple API

- default mutex is shared among all instances


  Commit: dcee2cd9e4a4072f975e586da3425f12d465f932
      https://github.com/D-Programming-Language/phobos/commit/dcee2cd9e4a4072f975e586da3425f12d465f932
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-01-20 (Tue, 20 Jan 2015)

  Changed paths:
    M std/concurrency.d

  Log Message:
  -----------
  Merge pull request #2664 from MartinNowak/master

add initOnce


Compare: https://github.com/D-Programming-Language/phobos/compare/13d8fa6195fc...dcee2cd9e4a4