provide finalize_io method to clear references to buffers of standard… #3

Job	Run time
build_mac	1m 51s
build_windows (BUILD_SHARED_LIBS=On CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS=On)	2m 53s
build_windows (BUILD_SHARED_LIBS=Off)	3m 28s
build_docker (gcc)	4m 18s
build_docker (clang)	4m 26s
build_docker (hip)	5m 18s
build_docker (cuda)	4m 40s
build_docker (sycl)	10m 16s
build_docker (intel)	5m 53s
	43m 3s

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