Code reformatting and improvement for OpenMP.
Moved CGOpenMPRegionInfo from CGOpenMPRuntime.h to CGOpenMPRuntime.cpp file and reworked the code for this change. Also added processing of ThreadID variable passed as an argument in outlined functions in parallel and task directives.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@219490 91177308-0d34-0410-b5e6-96231b3b80d8