1) NPP_staging as sources. Binaries removed.

2) NVidia tests for GPU
3) FD sample that uses NVidia's interface.

tests/gpu/src/nvidia_tests.cpp

@@ -0,0 +1,63 @@
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                        Intel License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000, Intel Corporation, all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//
+//   * The name of Intel Corporation may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "gputest.hpp"
+#include "cvconfig.h"
+
+class CV_NVidiaTestsCaller : public CvTest
+{
+public:
+    CV_NVidiaTestsCaller() : CvTest("GPU-NVidia", "NVidia") {}
+    virtual ~CV_NVidiaTestsCaller() {}
+
+protected:
+    
+	void run( int )
+	{   		
+#if defined(HAVE_CUDA)
+		int main_nvidia();
+		main_nvidia();	
+		ts->set_failed_test_info(CvTS::OK);
+#else
+		ts->set_failed_test_info(CvTS::SKIPPED);
+#endif
+	}   
+} CV_NVidiaTestsCaller_test;