[Ecls-list] Building 64 bit ECL on Windows

[Juan Jose Garcia-Ripoll]

I have uploaded further fixes. It turns out that the changes in GMP were
indeed just hiding the following problems:

* msvc/ecl/config.h.msvc6 defined ECL_LONG_BITS to be 64 instead of 32,
which is what should be with Windows64's model.

* The routine that adds a fixnum and a bignum used GMP's *_ui/*_si
function, which is incorrect (the fixnums do not fit in a long).

* A coercion error in ecl_to_int32_t(). For some reason the compiler was
confused about an integer constant.

I just build both 32 and 64 bit versions of ECL and ran the tests. In Win64
not everything runs fine, but we seem to be much closer.

Juanjo

-- 
Instituto de Física Fundamental, CSIC
c/ Serrano, 113b, Madrid 28006 (Spain)
http://juanjose.garciaripoll.googlepages.com
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