FONTSET_NAME.
(fontset_add): Fix for the case that TO is less than TO1.
(Ffontset_info): Don't use fallback fontset on checking the
default fontset.
(dump_fontset): New function for debugging.
(syms_of_coding): Don't initialize them.
(CATEGORY_MASK_UTF_16_AUTO): New macro.
(detect_coding_utf_16): Add CATEGORY_MASK_UTF_16_AUTO in
detect_info->found.
(decode_coding_utf_16): Don't detect BOM here.
(encode_coding_utf_16): Produce BOM if CODING_UTF_16_BOM (coding)
is NOT utf_16_without_bom.
(setup_coding_system): For a coding system of type utf-16, check
if the attribute :endian is Qbig or not (not nil or not), and set
CODING_REQUIRE_DETECTION_MASK if BOM detection is required.
(detect_coding): If coding type is utf-16 and BOM detection is
required, detect it.
(Fdefine_coding_system_internal): For a coding system of type
utf-16, check if the attribute :endian is Qbig or not (not nil or
not).
Vface_resizing_fonts.
(struct font_name): Rename member resizing_ratio to rescale_ratio.
(font_rescale_ratio): Renamed from font_resizing_ratio.
(split_font_name): Set font->rescale_ratio.
(better_font_p): Pay attention to font->rescale_ratio.
(build_scalable_font_name): Likewise. Change RESX, and RESY
fields.
(syms_of_xfaces): Declare Vface_font_rescale_alist as a Lisp
variable.
with the last arg charset_list acquired from coding.
(Fdefine_coding_system_internal): For ccl-based coding system, fix
the attribute coding_attr_ccl_valids.
(ccl_driver): New arg CHARSET_LIST. Use the above macros instead
of DECODE_CAHR, ENCODE_CHAR, CHAR_CHARSET.
(Fccl_execute): Call ccl_driver with the last arg Qnil.
(Fccl_execute_on_string): Likewise.
(Qfontset_info): New variable.
(syms_of_fontset): Defsym it.
(FONTSET_FALLBACK): New macro.
(fontset_face): Try also the default fontset.
(make_fontset): Realize a fallback fontset from the default
fontset.
(generate_ascii_font_name): Moved from xfaces.c. Rewritten by
using split_font_name_into_vector and build_font_name_from_vector.
(Fset_fontset_font): Access the elements of font_spec by enum
FONT_SPEC_INDEX. If font_spec is a string, extract the registry
name by using split_font_name_into_vector.
(Fnew_fontset): If no ASCII font is specified in FONTLIST,
generate a proper font name from the fontset name. Update
Vfontset_alias_alist.
(n_auto_fontsets): New variable.
(new_fontset_from_font_name): New function.
(Ffont_info): Store the information about fonts generated from the
default fontset in the first extra slot of the returned
char-table.
(font_name_registry): Function deleted.
(split_font_name_into_vector): New function.
(build_font_name_from_vector): New function.
(font_list): The argument REGISTRY is now a list of registry
names.
(choose_face_font): If we are choosing an ASCII font, and ATTRS
specifies an explicit font name, return the name as is. Make a
list of registy names.
