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/calib3d/test/test_solvepnp_ransac.cpp

@@ -183,6 +183,9 @@ protected:
                         method, totalTestsCount - successfulTestsCount, totalTestsCount, maxError, mode);
                     ts->set_failed_test_info(cvtest::TS::FAIL_BAD_ACCURACY);
                 }
+                cout << "mode: " << mode << ", method: " << method << " -> "
+                     << ((double)successfulTestsCount / totalTestsCount) * 100 << "%"
+                     << " (err < " << maxError << ")" << endl;
             }
         }
     }