Pull in changes from HEAD
	* fhandler.cc (fhandler_base_overlapped::wait_overlapped): Fix typo in
	debug_printf.
	(fhandler_base_overlapped::raw_read): Handle size difference between
	DWORD and {s}size_t platform-independently.
	(fhandler_base_overlapped::raw_write): Ditto.  Fix typo in comment.