[D-runtime] [D-Programming-Language/druntime] 9f2fb6: add pure and @nogc to cas

[GitHub via D-runtime]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/druntime
  Commit: 9f2fb6c034c2d4f4361e45f3fcce9c0619f18c4c
      https://github.com/D-Programming-Language/druntime/commit/9f2fb6c034c2d4f4361e45f3fcce9c0619f18c4c
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-03-14 (Sat, 14 Mar 2015)

  Changed paths:
    M src/core/atomic.d

  Log Message:
  -----------
  add pure and @nogc to cas

- was already inferred, but explicit annotation
  is needed for CoreDdoc declarations


  Commit: 3898801599163130e8fdc5aa24553e4fa2728822
      https://github.com/D-Programming-Language/druntime/commit/3898801599163130e8fdc5aa24553e4fa2728822
  Author: Martin Nowak <code at dawg.eu>
  Date:   2015-03-19 (Thu, 19 Mar 2015)

  Changed paths:
    M src/core/atomic.d

  Log Message:
  -----------
  Merge pull request #1191 from MartinNowak/pureCAS

add pure and @nogc to cas


Compare: https://github.com/D-Programming-Language/druntime/compare/c41cb051c818...389880159916