[plt-scheme] Cygwin build failure

Revision 233 of http://svn.plt-scheme.org/plt/trunk on up-to-date
Cygwin:

    make --unix

yields these errors:

    make[5]: Entering directory `/usr/local/src/plt-scheme/src/foreign' gcc -g -O2  -Wall     -DGC_DLL -I./../mzscheme -I./../mzscheme/include -I./../mzscheme/src -Igcc/libffi/include -c ./foreign.c -o foreign.o
    ./foreign.c:639: error: parse error before "Tsint8"
    ./foreign.c:639: warning: no semicolon at end of struct or union
    ./foreign.c:640: warning: type defaults to `int' in declaration of `x_uint8'
    ./foreign.c:640: warning: data definition has no type or storage class
    ./foreign.c:641: error: parse error before "x_int16"
    ./foreign.c:641: warning: type defaults to `int' in declaration of `x_int16'
    ./foreign.c:641: warning: data definition has no type or storage class

... and many similar in that file.  I wonder if I've got the wrong
header file ...

Any ideas?

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