* cppinit.c (MAX_WCHAR_TYPE_SIZE): Move to cpplib.h
	(cpp_post_options): Move sanity checks to...
	(sanity_checks): New.
	* cpplex.c (maybe_read_ucs): Fix prototype.
	(parse_string, cpp_parse_escape): Cast for %c format specifier.
	* cpplib.h (cppchar_t): Use unsigned long or unsigned long long
	if necessary.

From-SVN: r53163