Like writeNat, but for longs.
Like writeNat, but for longs. This is not the same as writeLong, which writes in base 256. Note that the binary representation of LongNat is identical to Nat if the long value is in the range Int.MIN_VALUE to Int.MAX_VALUE.
Write a natural number in big endian format, base 128.
Write a natural number in big endian format, base 128. All but the last digits have bit 0x80 set.