Restored findCirclesGridDefault() for backward compatibility

modules/calib3d/src/circlesgrid.cpp

@@ -1589,3 +1589,8 @@ size_t CirclesGridFinder::getFirstCorner(vector<Point> &largeCornerIndices, vect
   return cornerIdx;
 }
 
+bool cv::findCirclesGridDefault( InputArray image, Size patternSize,
+                                 OutputArray centers, int flags )
+{
+  return findCirclesGrid(image, patternSize, centers, flags);
+}