message: core: call omp_set_dynamic() for better CPU usage
  Similar to 'OMP_DYNAMIC=TRUE'.
diff: @@ -420,7 +420,16 @@ static int numThreads = -1;
  #elif defined HAVE_CSTRIPES
  // nothing for C=
  #elif defined HAVE_OPENMP
  -static int numThreadsMax = omp_get_max_threads();
  +static inline int _initMaxThreads()
  +{
  + int maxThreads = omp_get_max_threads();
  + if (!utils::getConfigurationParameterBool("OPENCV_FOR_OPENMP_DYNAMIC_DISABLE", false))
  + {
  + omp_set_dynamic(maxThreads);
  + }
  + return numThreads;
  +}
  +static int numThreadsMax = _initMaxThreads();
  #elif defined HAVE_GCD
  // nothing for GCD
  #elif defined WINRT
  