Merge pull request #1248 from NcJie/fixed-android-atof-not-found-issue

Fixed no member named 'atop' in global namespace issue for Android ND…

code/StringUtils.h

@@ -43,6 +43,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <sstream>
 #include <stdarg.h>
+#include <cstdlib>
 
 ///	@fn		ai_snprintf
 ///	@brief	The portable version of the function snprintf ( C99 standard ), which works on visual studio compilers 2013 and earlier.