Minor improvements: reduced verbosity of positioning tests; run.py - filter out…

Minor improvements: reduced verbosity of positioning tests; run.py - filter out non-executables on windows

modules/highgui/test/test_positioning.cpp

@@ -135,7 +135,7 @@ void CV_VideoPositioningTest::run_test(int method)
             continue;
         string file_path = src_dir + "video/big_buck_bunny." + ext[i];
 
-        printf("\nReading video file in %s...\n", file_path.c_str());
+        ts->printf(cvtest::TS::LOG, "\nReading video file in %s...\n", file_path.c_str());
 
 		CvCapture* cap = cvCreateFileCapture(file_path.c_str());
 

modules/ts/misc/run.py

@@ -381,6 +381,8 @@ class RunInfo(object):
     def isTest(self, fullpath):
         if not os.path.isfile(fullpath):
             return False
+        if self.targetos == "nt" and not fullpath.endswith(".exe"):
+            return False
         if hostos == self.targetos:
             return os.access(fullpath, os.X_OK)
         if self.targetos == "android" and fullpath.endswith(".apk"):