* devices.in (dev_storage): Use native NT device name for kmsg mailslot.

	* devices.in (dev_storage): Use native NT device name for kmsg mailslot.
	* devices.cc: Regenerate.
	* fhandler.cc (fhandler_base::operator =): Use path_conv assignment
	operator.
	(fhandler_base::set_name): Ditto.
	(fhandler_base::open): Use NT native path in debug output.
	* fhandler_mailslot.cc: Convert to NT native function calls.
	* ntdll.h (struct _FILE_MAILSLOT_SET_INFORMATION): Define.
	(NtCreateMailslotFile): Declare.
	* path.cc (path_conv::set_normalized_path): Don't set wide_path to NULL.
	(path_conv::set_name): Remove unused function.
	* path.h (path_conv::set_name): Drop declaration.
	(path_conv::operator =): Define.