Windows build broken in Linker.c

[John Wiegley]

>>>>> Simon Marlow <marlowsd at gmail.com> writes:

> I was working on a fix yesterday but ran out of time. Frankly this code is a
> nightmare, every time I touch it it breaks on some platform - this time I
> validated on 64 bit Windows but not 32. Aargh indeed.

Before I start breaking this code up into pieces, do we have tests that solely
target the linking sub-components, and how would I run them?  Perhaps I can
setup a fleet of virtual machines to try it out in every combination where we
expect the code to compile.

John