ffihugs, Storable.so

even if configure has "--enable-ffi", just issuing "make" doesn't
build and/or install the ffihugs executable.

furthermore, separately issuing "make ffihugs" is not sufficient
either, and that shows up in some surprising places:

  $ hugs -98 Data.Array.IO
  .........
  ERROR "/usr/local/src/hugs98/libraries/Hugs/Storable.hs" - Error while importing DLL "/usr/local/src/hugs98/libraries/Hugs/Storable.so":
  /usr/local/src/hugs98/libraries/Hugs/Storable.so: cannot open shared object file: No such file or directory

and indeed, "/usr/local/src/hugs98/libraries/Hugs/Storable.so" is not built..

I've checked docs/ffi-notes, but couldn't find anything relevant there; either
that, or I'm totally confused.. somebody help me out..

-Levent.