[PATCH 2/2] ntdll: Move InterlockedCompareExchange128 support to winnt.h.

[Jacek Caban]

Also properly declare intrinsic on msvc.

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
  dlls/ntdll/rtl.c | 26 ++++----------------------
  include/winnt.h  | 32 ++++++++++++++++++++++++++++++++
  2 files changed, 36 insertions(+), 22 deletions(-)