Implement LWG DR 2329 and DR 2332.

Implement LWG DR 2329 and DR 2332.

	* include/bits/regex.h (regex_match, regex_search): LWG DR 2329,
	add deleted overloads for rvalue strings.
	(regex_iterator, regex_token_iterator): LWG DR 2332, add deleted
	constructors for rvalue regexes.
	* testsuite/28_regex/algorithms/regex_match/dr2329_neg.cc: New.
	* testsuite/28_regex/algorithms/regex_search/dr2329_neg.cc: New.
	* testsuite/28_regex/iterators/regex_iterator/ctors/char/dr2332_neg.cc:
	New.
	* testsuite/28_regex/iterators/regex_token_iterator/ctors/char/
	dr2332_neg.cc: New.

From-SVN: r218555