message: gapi: avoid global static initializers
  use lazy on-demand initialization
diff: #include "logger.hpp" // GAPI_LOG
  #include "api/gproto_priv.hpp" // is_dynamic, rewrap
  -namespace
  +static
  +const std::vector<std::string>& getKnownIntrinsics()
  {
  // FIXME: This may be not the right design choice, but so far it works
  - const std::vector<std::string> known_intrinsics = {
  + static const std::vector<std::string> known_intrinsics = {
  cv::gapi::streaming::detail::GDesync::id()
  };
  + return known_intrinsics;
  }
  bool cv::gimpl::is_intrinsic(const std::string &s) {
  // FIXME: This search might be better in time once we start using string
  + const std::vector<std::string>& known_intrinsics = getKnownIntrinsics();
  return std::find(known_intrinsics.begin(),
  known_intrinsics.end(),
  s) != known_intrinsics.end();
  