dejagnu-gtest.h: Add multiple inclusion guards.

dejagnu-gtest.h: Add multiple inclusion guards.

	* g++.dg/asan/dejagnu-gtest.h: Add multiple inclusion guards.
	* asan_globals_test-wrapper.cc: New file.
	* g++.dg/asan/asan_test.C: Use asan_globals_test-wrapper.cc
	instead of asan_globals_test.cc as dg-additional-sources.
	Include asan_mem_test.cc, asan_str_test.cc and asan_oob_test.cc.
	* g++.dg/asan/asan_test_utils.h: Synced from upstream.  Include
	"sanitizer_test_utils.h" instead of
	"sanitizer_common/tests/sanitizer_test_utils.h".
	* g++.dg/asan/asan_str_test.cc: New file, synced from upstream.
	* g++.dg/asan/asan_mem_test.cc: New file, synced from upstream.
	* g++.dg/asan/asan_oob_test.cc: New file, synced from upstream.
	* g++.dg/asan/asan_globals_test.cc: Synced from upstream.
	* g++.dg/asan/asan_test.cc: Synced from upstream.
	* g++.dg/asan/sanitizer_test_utils.h: New file, synced from upstream.

From-SVN: r196045