More accurate AVX and AVX2 control.

- Previous version just checked option support, but not enable it.
- Also OpenCV tests reports invalid AVX and AVX2 support status.

modules/ts/src/ts_func.cpp

@@ -3002,8 +3002,12 @@ void printVersionInfo(bool useStdOut)
 #if CV_SSE4_2
     if (checkHardwareSupport(CV_CPU_SSE4_2)) cpu_features += " sse4.2";
 #endif
+#if CV_AVX
     if (checkHardwareSupport(CV_CPU_AVX)) cpu_features += " avx";
+#endif
+#if CV_AVX2
     if (checkHardwareSupport(CV_CPU_AVX2)) cpu_features += " avx2";
+#endif
 #if CV_NEON
     cpu_features += " neon"; // NEON is currently not checked at runtime
 #endif