2014-03-15  Tim Shen  <timshen91@gmail.com>

	* include/bits/regex.h: Add/modify comments.
	* include/bits/regex_compiler.h: Likewise.
	* include/bits/regex_executor.h: Likewise.
	* include/bits/regex_executor.tcc: Likewise.
	* include/bits/regex_scanner.h: Likewise.

From-SVN: r208593