* include/c_std/cmath.tcc: Use _GLIBCXX_ prefix on file guard.
	* include/c_std/std_cctype.h: Ditto.
	* include/c_std/std_cerrno.h: Ditto.
	* include/c_std/std_cfloat.h: Ditto.
	* include/c_std/std_climits.h: Ditto.
	* include/c_std/std_clocale.h: Ditto.
	* include/c_std/std_cmath.h: Ditto.
	* include/c_std/std_csetjmp.h: Ditto.
	* include/c_std/std_csignal.h: Ditto.
	* include/c_std/std_cstdarg.h: Ditto.
	* include/c_std/std_cstddef.h: Ditto.
	* include/c_std/std_cstdio.h: Ditto.
	* include/c_std/std_cstdlib.h: Ditto.
	* include/c_std/std_cstring.h: Ditto.
	* include/c_std/std_ctime.h: Ditto.
	* include/c_std/std_cwchar.h: Ditto.
	* include/c_std/std_cwctype.h: Ditto.
	* include/std/std_algorithm.h: Ditto.
	* include/std/std_bitset.h: Ditto.
	* include/std/std_complex.h: Ditto.
	* include/std/std_deque.h: Ditto.
	* include/std/std_fstream.h: Ditto.
	* include/std/std_functional.h: Ditto.
	* include/std/std_iomanip.h: Ditto.
	* include/std/std_ios.h: Ditto.
	* include/std/std_iosfwd.h: Ditto.
	* include/std/std_iostream.h: Ditto.
	* include/std/std_istream.h: Ditto.
	* include/std/std_iterator.h: Ditto.
	* include/std/std_limits.h: Ditto.
	* include/std/std_list.h: Ditto.
	* include/std/std_locale.h: Ditto.
	* include/std/std_map.h: Ditto.
	* include/std/std_memory.h: Ditto.
	* include/std/std_numeric.h: Ditto.
	* include/std/std_ostream.h: Ditto.
	* include/std/std_queue.h: Ditto.
	* include/std/std_set.h: Ditto.
	* include/std/std_sstream.h: Ditto.
	* include/std/std_stack.h: Ditto.
	* include/std/std_stdexcept.h: Ditto.
	* include/std/std_streambuf.h: Ditto.
	* include/std/std_string.h: Ditto.
	* include/std/std_utility.h: Ditto.
	* include/std/std_valarray.h: Ditto.
	* include/std/std_vector.h: Ditto.

From-SVN: r69705