[D-runtime] [D-Programming-Language/druntime] b37f86: use naked asm blocks to clear registers

[GitHub via D-runtime]

  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/druntime
  Commit: b37f86a402e530a00116c82432d23a477a81e30d
      https://github.com/D-Programming-Language/druntime/commit/b37f86a402e530a00116c82432d23a477a81e30d
  Author: Martin Nowak <code at dawg.eu>
  Date:   2014-11-10 (Mon, 10 Nov 2014)

  Changed paths:
    M src/core/thread.d

  Log Message:
  -----------
  use naked asm blocks to clear registers


  Commit: fc887f3a41f850c266812b56a4cd770acef7b044
      https://github.com/D-Programming-Language/druntime/commit/fc887f3a41f850c266812b56a4cd770acef7b044
  Author: Martin Nowak <code at dawg.eu>
  Date:   2014-11-10 (Mon, 10 Nov 2014)

  Changed paths:
    M src/core/thread.d

  Log Message:
  -----------
  fix Issue 12800 - Fibers are broken on Win64

- save non-volatile registers RSI and RDI


  Commit: d30668171d145d9c31f47e47717d0787845ff58f
      https://github.com/D-Programming-Language/druntime/commit/d30668171d145d9c31f47e47717d0787845ff58f
  Author: Sean Kelly <sean at invisibleduck.org>
  Date:   2014-11-10 (Mon, 10 Nov 2014)

  Changed paths:
    M src/core/thread.d

  Log Message:
  -----------
  Merge pull request #1012 from MartinNowak/fix12800

fix Issue 12800 - Fibers are broken on Win64


Compare: https://github.com/D-Programming-Language/druntime/compare/b9473662b127...d30668171d14