Added two more variant of write methods and added optional argument for the callback to these.
Added two more variant of write methods and added optional argument for the callback to these.

luastoned/turbo,ddysher/turbo,YuanPeir-Chen/turbo-support-mipsel,zcsteele/turbo,YuanPeir-Chen/turbo-support-mipsel,zcsteele/turbo,luastoned/turbo,ddysher/turbo,mniestroj/turbo,kernelsauce/turbo