Bringing get_param and print_params into cv::flann namespace.

modules/flann/include/opencv2/flann/flann.hpp

@@ -88,6 +88,9 @@ using ::cvflann::HierarchicalClusteringIndexParams;
 using ::cvflann::AutotunedIndexParams;
 using ::cvflann::SavedIndexParams;
 using ::cvflann::SearchParams;
+using ::cvflann::get_param;
+using ::cvflann::print_params;
+
 
 // bring the flann distances into this namespace
 using ::cvflann::L2_Simple;
@@ -104,6 +107,7 @@ using ::cvflann::ChiSquareDistance;
 using ::cvflann::KL_Divergence;
 
 
+
 template <typename Distance>
 class GenericIndex 
 {