(quote_name): Add fourth parameter, width, into which to

(quote_name): Add fourth parameter, width, into which to
store the screen columns, and return the number of bytes instead.
(print_dir): Pass NULL as fourth parameter of quote_name.
(print_name_with_quoting): Likewise.
(length_of_file_name_and_frills): Get the width from the fourth
parameter of quote_name instead of return value.