* dtable.cc (dtable::init_std_file_from_handle): Default to using binmode
derived from path_conv, when required.
* fhandler.h (fhandler_base::get_w_binary): Default to binmode if nothing else
is specified.
* fhandler.h (fhandler_base::get_r_binary): Ditto.
* fhandler_disk_file.cc (fhandler_disk_file::fstat_by_handle): Work around g++
warning.
* path.cc (path_conv::check): Remove a debugging statement.