* include/bits/basic_string.h (basic_string::find, basic_string::rfind)
	(basic_string::find_first_of, basic_string::find_last_of)
	(basic_string::find_first_not_of, basic_string::find_last_not_of):
	Make all overloads noexcept.
	(basic_string::compare(const _CharT*)): Make noexcept.

From-SVN: r243290