Function string_equal_no_case

src/string_util.cpp:106–112

	}

	bool string_equal_no_case(string_view s1, string_view s2)
	{
		if (s1.size() != s2.size()) return false;
		return std::equal(s1.begin(), s1.end(), s2.begin()
			, [] (char const c1, char const c2)
			{ return to_lower(c1) == to_lower(c2); });
	}

	// generate a url-safe random string
	void url_random(span<char> dest)