[PATCH] include: Add threadpoolapiset.h file.

[Jacek Caban]

Based on patch by Hans Leidekker.

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
  include/threadpoolapiset.h | 65 ++++++++++++++++++++++++++++++++++++++
  include/winbase.h          | 29 +----------------
  include/winnt.h            |  1 -
  3 files changed, 66 insertions(+), 29 deletions(-)
  create mode 100644 include/threadpoolapiset.h