[plt-scheme] mzscheme subdirectory for SWIG

On Mar 28, Dmitriy.Zavin at infineon.com wrote:
> I think we should probably convert the SWIG stuff to FFI. I added
> the struct code that is currently in SWIG. If you define a struct
> mapping, then SWIG will create a scheme structure if your func is
> supposed to return a struct. It's fairly limited since it only goes
> one way (C->scheme), but it suited my purposes.

FWIW, the foreign code will keep C structs as C structs, so you have
no overhead for keeping them around.  You inly translate values when
you access the c struct object.

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          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
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