cobol: Diagnostic messages, Flex build, and some cppcheck reports. [PR120328, PR119695]

cobol: Diagnostic messages, Flex build, and some cppcheck reports. [PR120328, PR119695]

Remove %0x and similar from diagnostic framework messages.  Remove %zu
from printf messages because it is not supported on some
platforms. Corrections in response to cppcheck.  Sundry small fixes.

gcc/cobol/ChangeLog:

	PR cobol/120328
	* Make-lang.in: Success with non-English locale.
	PR cobol/119695
	* cbldiag.h (cbl_unimplemented_at): Comment:
	* cdf-copy.cc (copybook_elem_t::open_file): Indentation.
	* cdf.y: YYABORT on certain errors.
	* cdfval.h (cdf_value): Const parameter.
	* copybook.h (class copybook_elem_t): Initialization.
	(class uppername_t): Explicit constructor.
	* except.cc (ec_type_descr): Remove %04s.
	(cbl_enabled_exceptions_t::dump): Remove %zu.
	* exceptg.h (class exception_turn_t): Explicit constructor.
	* genapi.cc (parser_perform_conditional): Remove %zu.
	(set_exception_environment): Formatting.
	(parser_statement_begin): Exception overhead.
	(parser_perform_conditional): Formatting:
	(parser_perform_conditional_end): Eliminate size_t.
	(parser_check_fatal_exception): Exception overhead.
	(parser_perform_conditional_end): Remove %zu.
	* inspect.h (struct cbx_inspect_match_t): Const reference.
	(struct cbx_inspect_t): Const parameter.
	* lexio.cc (cdftext::process_file): Remove %zu.
	* lexio.h (struct YYLTYPE): Remove unneeded struct.
	(YYLTYPE_IS_DECLARED): Likewise.
	(YYLTYPE_IS_TRIVIAL): Likewise.
	* parse.y: Comment; change DOT.
	* scan.l: Scan function names without swallowing whitespace.
	* scan_ante.h (scanner_parsing): Remove %zu.
	(scanner_parsing_pop): Remove %zu.
	(binary_integer_usage): Remove %zu.
	* scan_post.h (prelex): Correct post-CDF resumption.
	(yylex): Clearer message.
	* symbols.cc (symbol_table_extend): Explicit constructor.
	(elementize): Const parameter.
	(is_variable_length): Correct always-false.
	(symbols_update): Remove unnecessary shadow variable.
	(struct symbol_elem_t): Const parameter.
	(symbol_alphabet_add): Const parameter.
	(new_literal_add): Initialization.
	* symbols.h (class cbl_domain_elem_t): Correct assignment.
	(struct cbl_span_t): Improve constructor.
	(struct cbl_refer_t): Initialization.
	(struct cbl_alphabet_t): Rename shadow variable.
	(struct cbl_file_key_t): Remove unused constructor.
	(struct symbol_elem_t): Initialization.
	(struct cbl_until_addresses_t): Use unsigned int, for messages.
	(struct cbl_prog_hier_t): Initialization.
	(struct cbl_perform_tgt_t): Repair constructor.
	(struct cbl_label_t): Const parameter.
	(symbol_typedef_add): Const parameter.
	(symbol_field_add): Explicit constructor.
	(symbol_label_add): Explicit constructor.
	(symbol_program_add): Remove C-style "struct" use.
	(symbol_special_add): Remove C-style "struct" use.
	(symbol_alphabet_add): Const parameter.
	(symbol_file_add): Remove C-style "struct" use.
	(symbol_section_add): Remove C-style "struct" use.
	* symfind.cc: Const parameter.
	* util.cc (gb4): New function.
	* util.h (gb4): New function.
	* TODO: New file.

libgcobol/ChangeLog:

	* common-defs.h (enum cbl_file_mode_t): Whitespace.
	(enum file_stmt_t): Likewise.
	(ec_cmp): Likewise.
	(struct cbl_declarative_t): Add "explicit" keyword.
	(class cbl_enabled_exceptions_t): Whitespace.
	* gfileio.cc: Remove cppcheck comment.
	* libgcobol.cc (class ec_status_t): Add "explicit" keyword.
	(match_declarative): Remove %zu.
	(default_exception_handler): Likwise.
	(__gg__check_fatal_exception): Exception overhead.
	(__gg__exception_push): Remove %zu.
	(__gg__exception_pop): Likewise.
	(cbl_enabled_exception_t::dump): Likewise.
	(__gg__match_exception): Exception overhead; remove %zu.
	(cbl_enabled_exceptions_t::dump): Remove %zu.
	(__gg__set_exception_environment): Likewise.

Co-authored-by: James K. Lowden <jklowden@cobolworx.com>
Co-authored-by: Robert Dubner <rdubner@symas.com>
(cherry picked from commit 37f5fdd008399c239e0689f2e864519505c78c7e)