Thompson matcher refactored.

2013-07-30  Tim Shen  <timshen91@gmail.com>

	Thompson matcher refactored. Fix grouping problem.
	* include/bits/regex.h: Use a dispatcher _M_get_matcher().
	* include/bits/regex_compiler.h: Tweak for auto switching.
	* include/bits/regex_grep_matcher.h: Class structure.
	* include/bits/regex_grep_matcher.tcc: _BFSMatcher(Thompson
	matcher) refactoring.
	* include/bits/regex_nfa.h: Change _Results's interfaces.
	* include/std/regex: Includes <map> and <queue>.
	* testsuite/28_regex/algorithms/regex_match/extended/53622.cc:
	For both matchers.
	* testsuite/28_regex/algorithms/regex_match/extended/57173.cc:
	For both matchers.
	* testsuite/28_regex/algorithms/regex_match/extended/string_dispatch_01.cc:
	New.

From-SVN: r201334