[phobos] [dlang/phobos] b14de9: use @system to return pointers to stack

[GitHub via phobos]

  Branch: refs/heads/master
  Home:   https://github.com/dlang/phobos
  Commit: b14de981413d02be1c07cecf6cd9f1b8c2f03288
      https://github.com/dlang/phobos/commit/b14de981413d02be1c07cecf6cd9f1b8c2f03288
  Author: Walter Bright <walter at walterbright.com>
  Date:   2016-08-24 (Wed, 24 Aug 2016)

  Changed paths:
    M std/parallelism.d

  Log Message:
  -----------
  use @system to return pointers to stack


  Commit: ed219e8e98015c75649b23b95813b489f62085f8
      https://github.com/dlang/phobos/commit/ed219e8e98015c75649b23b95813b489f62085f8
  Author: Sebastian Wilzbach <seb at wilzba.ch>
  Date:   2016-08-24 (Wed, 24 Aug 2016)

  Changed paths:
    M std/parallelism.d

  Log Message:
  -----------
  Merge pull request #4749 from WalterBright/parallel-system

use @system to return pointers to stack


Compare: https://github.com/dlang/phobos/compare/beaba6e4983c...ed219e8e9801