[OpenMP] Fix build errors when building with KMP_DEBUG_ADAPTIVE_LOCKS=1

This change fixes build errors when building a runtime with adaptive lock stats
enabled. Most of the errors were due to the recent changes in the runtime, but
it seems that we have not tried to build this debug runtime on Windows for a
long time.

Patch by Hansang Bae

Differential Revision: https://reviews.llvm.org/D49823

llvm-svn: 338277