antimake: keep per-object mkdir always quiet
antimake: keep per-object mkdir always quiet

mgjv/libusual,mgjv/libusual,ifduyue/libusual,rabbitt/libusual,mgjv/libusual,ifduyue/libusual,rabbitt/libusual,ifduyue/libusual,markokr/libusual,ifduyue/libusual,mgjv/libusual,markokr/libusual,rabbitt/libusual,rabbitt/libusual,markokr/libusual,markokr/libusual