Add PR119692 "C++ 'typeinfo', 'vtable' vs. OpenACC, OpenMP 'target' offloading" test...

Add PR119692 "C++ 'typeinfo', 'vtable' vs. OpenACC, OpenMP 'target' offloading" test cases [PR119692]

... documenting the status quo.

	PR c++/119692
	gcc/testsuite/
	* g++.target/gcn/pr119692-1-1.C: New.
	* g++.target/nvptx/pr119692-1-1.C: Likewise.
	libgomp/
	* testsuite/libgomp.c++/pr119692-1-1.C: New.
	* testsuite/libgomp.c++/pr119692-1-2.C: Likewise.
	* testsuite/libgomp.c++/pr119692-1-3.C: Likewise.
	* testsuite/libgomp.c++/pr119692-1-4.C: Likewise.
	* testsuite/libgomp.c++/pr119692-1-5.C: Likewise.
	* testsuite/libgomp.oacc-c++/pr119692-1-1.C: Likewise.
	* testsuite/libgomp.oacc-c++/pr119692-1-2.C: Likewise.
	* testsuite/libgomp.oacc-c++/pr119692-1-3.C: Likewise.