Add code generation support for firstprivate and private clauses of teams on the host. Add extensive regression tests including lambda functions and vla testing.

http://reviews.llvm.org/D17582



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@262663 91177308-0d34-0410-b5e6-96231b3b80d8