(POINT_TO_PIXEL): Don't divice POINT by 10.

(POINT_TO_PIXEL): Don't divice POINT by 10.
(QCspacing, QCdpi): New variables.
(syms_of_font): Initialize them.
(font_pixel_size): New function.
(font_put_extra): New function.
(font_parse_xlfd): Fix handling of font size.  Add QCdpi property
in FONT_EXTRA.
(font_parse_fcname): Handle enumenrated values (e.g. bold).  Fix
handling font size.  Add QCname property that contains only
unknown properties.
(font_score): Change argument.  Caller changed.  Pay attention to
FONT_PIXEL_SIZE_QUANTUM.
(font_sort_entites): Fix handling of font size.
(font_list_entities): Likewise.
(font_find_for_lface): Likewise.
(font_open_for_lface): Likewise.
(font_open_by_name): Likewise.
(Ffont_spec): Add QCname property that contains only unknown
properties.