mpn_rshift / mpn_lshift bug on m68000

[Kevin Ryde]

Patrick Pelissier <Patrick.Pelissier at loria.fr> writes:
>
> But you can change this with some compiler options to redefine at
> compile time the size of a int (-mlong or -mshort for example)...

Incidentally, there are limits on how much trouble we want to take
over such options.

We follow standard calling conventions for whatever system, and anyone
deliberately telling the compiler to be incompatible is pretty much on
their own.

Of course it's another matter if some systems in their normal setup
are one way and others another, then we want to detect and cooperate.