Fix duplicating system methods

Author: s1ddok

cocos2d/Support/CGPointExtension.h

@@ -330,6 +330,8 @@ BOOL ccpSegmentIntersect(CGPoint A, CGPoint B, CGPoint C, CGPoint D);
  */
 CGPoint ccpIntersectPoint(CGPoint A, CGPoint B, CGPoint C, CGPoint D);
 
+    
+#if !__CC_PLATFORM_IOS
 @interface NSValue (CCValue)
 
 + (NSValue *)valueWithCGPoint:(CGPoint)point;
@@ -343,6 +345,7 @@ CGPoint ccpIntersectPoint(CGPoint A, CGPoint B, CGPoint C, CGPoint D);
 - (CGAffineTransform)CGAffineTransformValue;
 
 @end
+#endif
 
 #ifdef __cplusplus
 }

cocos2d/Support/CGPointExtension.m

@@ -160,6 +160,7 @@ float ccpAngle(CGPoint a, CGPoint b)
 	return angle;
 }
 
+#if !__CC_PLATFORM_IOS
 @implementation NSValue (CCValue)
 
 + (NSValue *)valueWithCGPoint:(CGPoint)point
@@ -212,4 +213,5 @@ - (CGAffineTransform)CGAffineTransformValue
 
 @end
 
+#endif