(Qget_emacs_mule_file_char, Qload_force_doc_strings,
load_each_byte, unread_char): New variables.
(readchar_backlog): This variable deleted.
(readchar): Return a character unless load_each_byte is nonzero.
Handle the case that readcharfun is Qget_emacs_mule_file_char or a
cons. If unread_char is not -1, simply return it.
(unreadchar): Handle the case that readcharfun is
Qget_emacs_mule_file_char or a cons. Set unread_char if
necessary.
(read_multibyte): This function deleted.
(readbyte_for_lambda, readbyte_from_file, readbyte_from_string)
(read_emacs_mule_char): New functions.
(Fload): Even if the file doesn't have the extention ".elc", if
safe_to_load_p returns a positive version number, assume that the
file contains bytecompiled code. If the version is less than 22,
load the file while decoding multibyte sequences by emacs-mule.
(readevalloop): Don't use readchar_backlog.
(Fread): Likewise. Pay attention to the case that STREAM is a
cons.
(Fread_from_string): Pay attention to the case that STREAM is a
cons.
(read_escape): The arg BYTEREP deleted.
(read1): Set load_each_byte to 1 temporarily while handling
#@NUMBER. Don't call read_multibyte.
(read_vector): Call Fread with a cons. If readcharfun is
Qget_emacs_mule_file_char, decode the read string by emacs-mule.
(read_list): If doc_reference is 2, make the cdr part string as
unibyte.
(syms_of_lread): Intern and staticpro Qget_emacs_mule_file_char
and Qload_force_doc_strings.
(string_char_with_unification): Add `const' to local variables.
(str_as_unibyte): Likewise.
(string_escape_byte8): Likewise.
(syms_of_character): Declare script-alist as a Lisp variable.
LEADING_CODE_PRIVATE_21, LEADING_CODE_PRIVATE_22): Macros
deleted. Callers changes to use
EMACS_MULE_LEADING_CODE_PRIVATE_11, etc.
(decode_coding_ccl): Add `const' to local variables.
(consume_chars): Likewise.
(Ffind_coding_systems_region_internal): Likewise.
(Fcheck_coding_systems_region): Likewise.
(charset_ordered_list_tick): Extern it.
(EMACS_MULE_LEADING_CODE_PRIVATE_11,
EMACS_MULE_LEADING_CODE_PRIVATE_12,
EMACS_MULE_LEADING_CODE_PRIVATE_21,
EMACS_MULE_LEADING_CODE_PRIVATE_22): New macros
(Funify_charset): Adjusted for the change of Funify_charset.
(Fdefine_charset_internal): Increment charset_ordered_list_tick.
(Funify_charset): New optional arg DEUNIFY. If it is non-nil,
deunify intead of unify a charset.
(string_xstring_p): Add `const' to local variables.
(find_charsets_in_text): Add `const' to arguemnts and local
variables.
(encode_char): Adjusted for the change of Funify_charset. Fix
detecting of invalid code.
(Fset_charset_priority): Increment charset_ordered_list_tick.
