Update.

Update.

	* posix/regcomp.c (build_word_op): Rename like...
	(build_charclass_op): ...this.  Accept two extra parameters,
	CLASS_NAME and EXTRA.  Add EXTRA to the result, not only _.
	(peek_token): accept \s and \S as OP_SPACE and OP_NOTSPACE.
	(parse_expression): replace build_word_op with
	build_charclass_op, add new arguments, accept OP_SPACE
	and OP_NOTSPACE.
	* posix/regex_internal.h (re_token_type_t): Add OP_SPACE
	and OP_NOTSPACE.