If you expect to use isLittleEndian a lot, it might be worthwhile to 
compute this during image startup and cache the results in a class variable.

Look for selectors containing "startUp" for examples of how to run code
at image startup.

-david

[snip]

> isLittleEndian
>   "Answer true if the machine on which we are executing uses little
>   endian byte order conventions."
> 
>   ^ ((ReadStream on: (ByteArray newFrom: #(0 0 4 210))) 
> nextNumber: 4) == 1234

[snip]