[OPENMP] Added several test cases for clauses 'ordered' and 'nowait': if there are more than one 'nowait' or 'ordered' clause an error message is expected.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@213496 91177308-0d34-0410-b5e6-96231b3b80d8