Arbitrary Size Integer Arrays

[Walter Bright]

Don wrote:
> If you provide slice access (eg, give me elements [a..b] as an array of 
> ints) then you can have reasonable performance. Unpacking consecutive 
> elements can be done quite efficiently (it's an interesting optimisation 
> problem, though!).

It wouldn't be slicable because a slice would have to start at the 
beginning of a byte. The D bit type died in that quagmire.