member require_flushing.
(CODING_REQUIRE_FLUSHING_MASK, CODING_REQUIRE_DECODING_MASK,
CODING_REQUIRE_ENCODING_MASK, CODING_REQUIRE_DETECTION_MASK): New
macros.
(CODING_REQUIRE_NO_CONVERSION, CODING_MAY_REQUIRE_NO_CONVERSION):
These macros deleted.
(CODING_REQUIRE_FLUSHING, CODING_REQUIRE_DECODING,
CODING_REQUIRE_ENCODING, CODING_REQUIRE_DETECTION): New macros.
charset_revision_number.
(CODING_SPEC_ISO_SAFE_CHARSETS): This macro deleted.
(CODING_SPEC_ISO_REVISION_NUMBER): New macro.
(struct coding_system): Member `safe_charsets' is moved from
struct iso2022_spec.
(CODING_EOL_INCONSISTENT): New macro.
(CODING_REQUIRE_NO_CONVERSION): Check also coding_type_raw_text.
(CODING_MAY_REQUIRE_NO_CONVERSION): Likewise.
(CODING_CATEGORY_IDX_RAW_TEXT): New macro.
(CODING_CATEGORY_MASK_RAW_TEXT): New macro.
(Vlatin_extra_code_table): New variable.
(detect_coding_iso2022): Pay attention to Vlatin_extra_code_table.
(detect_coding_mask): Likewise.
(setup_coding_system): Handle a new FLAGS element
ACCEPT-LATIN-EXTRA-CODE.
(syms_of_coding): Delete code for Vmicrosoft_code_table.
Declare latin-extra-code-table as a Lisp variable, and initialize
it.
CODING_REQUIRE_EOL_CONVERSION, CODING_REQUIRE_CONVERSION): Deleted.
(CODING_REQUIRE_NO_CONVERSION): New macro.
(CODING_MAY_REQUIRE_NO_CONVERSION): New macro.
(CODING_CATEGORY_IDX_ISO_7_ELSE): New macro.
(CODING_CATEGORY_IDX_ISO_8_ELSE): New macro
(CODING_CATEGORY_MASK_ISO_ELSE): This macro is deleted.
(CODING_CATEGORY_MASK_ISO_7_ELSE): New macro.
(CODING_CATEGORY_MASK_ISO_8_ELSE): New macro.
(CODING_CATEGORY_MASK_ANY): Adjusted for the above change.