Configure: use C99 rather than C11
Configure: use C99 rather than C11

convercraft/NNPACK,microblink/NNPACK,microblink/NNPACK,Maratyszcza/NNPACK,convercraft/NNPACK,Maratyszcza/NNPACK,Maratyszcza/NNPACK,microblink/NNPACK,convercraft/NNPACK,microblink/NNPACK,convercraft/NNPACK,Maratyszcza/NNPACK