Test 'libgomp.oacc-*/kernels-private-vars-*' with '--param=openacc-kernels=decompose...

Test 'libgomp.oacc-*/kernels-private-vars-*' with '--param=openacc-kernels=decompose' [PR104784]

Before recent commit 8935589b496f755e08cadf26d8ceddf0dd6e0968
"OMP lowering: Regimplify 'OMP_CLAUSE_MAP_DECL_MAKE_ADDRESSABLE' DECLs
[PR100280, PR104132, PR104133]", 'libgomp.oacc-c' testing already worked fine,
but 'libgomp.oacc-c++' testing ICEed.  Via the commit mentioned, the C++
testing ICEs are now resolved, but the underlying issue remains to be looked
into: PR104784 "OpenACC 'kernels' decomposition: C vs. C++ differences".

	PR middle-end/104784
	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-local-worker-1.c:
	Test with '--param=openacc-kernels=decompose'.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-local-worker-2.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-local-worker-3.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-local-worker-4.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-local-worker-5.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-1.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-2.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-3.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-4.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-5.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-gang-6.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-vector-1.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-vector-2.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-worker-1.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-worker-2.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-worker-3.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-worker-4.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-worker-5.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-worker-6.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/kernels-private-vars-loop-worker-7.c:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-gang-1.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-gang-2.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-gang-3.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-gang-6.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-vector-1.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-vector-2.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-worker-1.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-worker-2.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-worker-3.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-worker-4.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-worker-5.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-worker-6.f90:
	Likewise.
	* testsuite/libgomp.oacc-fortran/kernels-private-vars-loop-worker-7.f90:
	Likewise.