OpenMP: Fix append_args handling in modify_call_for_omp_dispatch

OpenMP: Fix append_args handling in modify_call_for_omp_dispatch

At tree level, the addr ref is also required for array dummy arguments,
contrary to C; the GOMP_interop calls in modify_call_for_omp_dispatch
were updated accordingly (using build_fold_addr_expr).

As the GOMP_interop calls had no location data associated with them,
the init call happened as soon as executing the previous line of code,
which was confusing; solution: use the location data of the function
call itself.

	PR middle-end/119662

gcc/ChangeLog:

	* gimplify.cc (modify_call_for_omp_dispatch): Fix GOMP_interop
	arg passing; add location info to function calls.

libgomp/ChangeLog:

	* testsuite/libgomp.c/append-args-fr-1.c: New test.
	* testsuite/libgomp.c/append-args-fr.h: New test.

gcc/testsuite/ChangeLog:
	* c-c++-common/gomp/append-args-interop.c: Update for fixed
	GOMP_interop call.
	* g++.dg/gomp/append-args-8.C: Likewise.
	* gfortran.dg/gomp/append-args-interop.f90: Likewise.