(struct xlfdpat_block, struct xlfdpat): New structs.

(struct xlfdpat_block, struct xlfdpat): New structs.
(xlfdpat_destroy, xlfdpat_create, xlfdpat_exact_p)
(xlfdpat_block_match_1, xlfdpat_match): New functions.
(xlfdpat_block_match): New macro.
(mac_to_x_fontname): Don't use tolower for non-ASCII characters.
(x_font_name_to_mac_font_name): Set coding.dst_multibyte to 0.
(add_font_name_table_entry): Increase font_name_table_size more
rapidly.
(mac_c_string_match): Remove function.
(mac_do_list_fonts): Use XLFD pattern match instead of regular
expression match.