[OpenMP] Ensure testing for versions 4.5 and default - Part 2

Many OpenMP Clang tests do not RUN for version 4.5 and the default
version. This second patch in the series handles test cases which
require updation in CHECK lines along with adding RUN lines for
the default version. It involves updating line number of pragmas.

Reviewed By: ABataev

Differential Revision: https://reviews.llvm.org/D85150