cppfiles.c (file_cleanup, [...]): Replace bcopy(), index() etc calls.

	* cppfiles.c (file_cleanup, _cpp_find_include_file,
	remap_filename, _cpp_read_include_file, actual_directory,
	hack_vms_include_specification): Replace bcopy(), index() etc
	calls.  Add casts to some allocations.  Make some variables
 	pointers to const [unsigned] char.
	* cpphash.c (_cpp_install, macro_cleanup, collect_expansion,
	collect_formal_parameters): Similarly.
	* cppinit.c (struct pending_option, append_include_chain,
	cpp_options_init, cpp_reader_init, initialize_standard_includes,
	cpp_start_read, new_pending_define, handle_option): Similarly.
	* cpplib.c (cpp_define, copy_comment, do_define, do_include,
	do_undef, do_error, do_warning, do_pragma, do_pragma_once,
	do_pragma_implementation, detect_if_not_defined,
	do_ifdef, skip_if_group, cpp_get_token, parse_string,
	do_assert, do_unassert): Similarly.
	* cpplib.h (cpp_buffer, cpp_options): Update types.  Update
	function prototypes.
	* mkdeps.c (deps_add_target, deps_add_dep): cast allocations.

From-SVN: r32477