Use explicit no-sse flags when SSE is off

Also:
- Silence clang warnings about unsupported command line arguments
- Add diagnostic print to calib3d test
- Fixed perf test relative error check
- Fix iOS build problem

modules/ts/src/ts_perf.cpp

@@ -438,9 +438,9 @@ static int countViolations(const cv::Mat& expected, const cv::Mat& actual, const
 
     if (v > 0 && max_violation != 0 && max_allowed != 0)
     {
-        int loc[10];
+        int loc[10] = {0};
         cv::minMaxIdx(maximum, 0, max_allowed, 0, loc, mask);
-        *max_violation = diff64f.at<double>(loc[1], loc[0]);
+        *max_violation = diff64f.at<double>(loc[0], loc[1]);
     }
 
     return v;