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.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@208593 138bc75d-0d04-0410-961f-82ee72b054a4