* cppfiles.c: Include mkdeps.h.
	(find_include_file, read_include_file): Remove _cpp_ prefix
	from name, make static.
	(_cpp_execute_include): New function, broken out of
	do_include.

	* cpplib.c: Don't include mkdeps.h.
	(struct directive): Remove type field. Reorder entries.  The
	function takes only one argument.
	(struct if_stack): Make type field an int.
	(directive_table): Rename to dtable.  Generate it, the
	prototypes of the directive handlers, and the enum for the
	directive numbers, from a template macro.
	(do_ifndef, do_include_next, do_import): New functions.
	(do_define, do_include, do_endif, do_ifdef, do_if, do_else,
	do_undef, do_line, do_elif, do_error, do_pragma, do_warning,
	do_ident, do_assert, do_unassert, do_sccs): Take only one
	argument.
	(do_sccs): Define always, but alter behavior based on
	SCCS_DIRECTIVE.
	(_cpp_handle_directive, consider_directive_while_skipping):
	Restructure for new directive table layout.

	(pass_thru_directive): Take a directive number, not a pointer
	to a struct directive.
	(parse_include): New function, broken out of do_include.
	(do_include, do_import, do_include_next): Use parse_include
	and _cpp_execute_include.
	(do_elif, do_else): Test for T_ELSE specifically when checking
	for #elif/#else after #else.
	(parse_ifdef): New function, broken out of do_ifdef.
	(validate_else): Expect a name arg without a leading #.
	(if_directive_name): Delete.
	(cpp_define, cpp_assert, cpp_undef, cpp_unassert): Call
	directive handlers with only one argument.

	* cpphash.h: Update prototypes.
	(enum node_type): Remove entries for directives.
	* Makefile.in: Update dependencies.

From-SVN: r32519