gimplify.c (omp_is_private): Don't return true if decl is not already private...

gimplify.c (omp_is_private): Don't return true if decl is not already private on #pragma omp for or #pragma...

	* gimplify.c (omp_is_private): Don't return true if decl
	is not already private on #pragma omp for or #pragma omp parallel for.

	* gcc.dg/gomp/pr27388-3.c: Adjust dg-final.

	* testsuite/libgomp.c/loop-10.c: New test.
	* libgomp.c/loop-3.c (main): Add lastprivate clause.
	* libgomp.c++/loop-6.C (main): Likewise.

From-SVN: r137199