cross compiling PSPP

[unknown-1]

After Ben's push of last night, cross compiling on openSUSE for
MSWindows works without an error.
Now, libpspp.a
        libpspp.la
        libpspp-core.a
        libpspp-core.la
are generated in the lib directory. But no .dll's.

I had the same issue 15 may 2008 with the cygwin version. Maybe this
has the same reason. Unfortunately I have no idea how John fixed this
in 2008.

Is anybody able to fix this?

Have fun