message: Fix implicitly-deleted default constructor
diff: @@ -36,11 +36,11 @@ struct GAPI_EXPORTS GKernel
  {
  using M = std::function<GMetaArgs(const GMetaArgs &, const GArgs &)>;
  - const std::string name; // kernel ID, defined by its API (signature)
  - const std::string tag; // some (implementation-specific) tag
  - const M outMeta; // generic adaptor to API::outMeta(...)
  - const GShapes outShapes; // types (shapes) kernel's outputs
  - const GKinds inKinds; // kinds of kernel's inputs (fixme: below)
  + std::string name; // kernel ID, defined by its API (signature)
  + std::string tag; // some (implementation-specific) tag
  + M outMeta; // generic adaptor to API::outMeta(...)
  + GShapes outShapes; // types (shapes) kernel's outputs
  + GKinds inKinds; // kinds of kernel's inputs (fixme: below)
  };
  // TODO: It's questionable if inKinds should really be here. Instead,
  // this information could come from meta.
  