Add changes to profiling interface from OG8 branch

Add changes to profiling interface from OG8 branch

This bundles up the parts of the profiling code from the OG8 branch that were
not included in the upstream patch.

	libgomp/
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-kernels-1.c: Update.

	libgomp/
	* oacc-init.c (get_property_any): Add profiling code.

	libgomp/
	* Makefile.am (libgomp_la_SOURCES): Add
	oacc-profiling-acc_register_library.c.
	* Makefile.in: Regenerate.
	* libgomp.texi: Remove paragraph about acc_register_library.
	* oacc-parallel.c (GOACC_parallel_keyed_internal): Set device_api for
	profiling.
	* oacc-profiling-acc_register_library.c: New file.
	* oacc-profiling.c (goacc_profiling_initialize): Call
	acc_register_library.  Avoid duplicate registration.
	(acc_register_library): Remove.
	* config/nvptx/oacc-profiling-acc_register_library.c:
	New empty file.
	* config/nvptx/oacc-profiling.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-dispatch-1.c: Remove
	call to acc_register_library.
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-init-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-kernels-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-parallel-1.c: Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-valid_bytes-1.c:
	Likewise.
	* testsuite/libgomp.oacc-c-c++-common/acc_prof-version-1.c: Likewise.

(cherry picked from openacc-gcc-9-branch commit
b1321d52402d217793a27592e2959b07319df75b)