java on cygwin?

[Jeff Sturm]

On 22 Mar 2001, Tom Tromey wrote:
> If it doesn't affect non-Cygwin builds, I think we should just check
> it in.  If it doesn't work, it still makes things better and not
> worse.

I should've mentioned I tested Jon's patch on Cygwin.  It passed the
libffi tests, except for structs (which we don't need).  I did not test
closures.

I'd question the _ffi_call_SYSV entry point, since this is diffrent from
the SYSV ABI.  Perhaps it should be _ffi_call_WIN32 with the appropriate
changes in ffi.c.  Also, you should look at the changes in
Makefile.am.  Otherwise OK.

Jeff