Bugfix of JVETQ0172 (Disallow differing chroma format and different bit depths for cross-layer prediction) and bugfix of setting inter_layer_ref_pics_present_flag and constraint (When vps_independent_layer_flag[ GeneralLayerIdx[ nuh_layer_id ] ] is equal to 1, the value of inter_layer_ref_pics_present_flag shall be equal to 0.)