- make declaration of ed_get_packet(), ed_ring_copy(), ed_hpp_readmem() and

- make declaration of ed_get_packet(), ed_ring_copy(), ed_hpp_readmem() and
  ed_hpp_writemem() consistent with their definition
- remove unused stack variable `sc' in ed_isa_probe()
- ANSIfy

Submitted-by: Matthias Schmidt <schmidtm at mathematik.uni-marburg.de>
- use u_short and u_char instead of "unsigned {short, char}"