Dike out some obsolete defines which referenced ih_next and ih_prev from struct ipovly (they don't exist anymore because they don't work when pointers are 64bit).
Dike out some obsolete defines which referenced ih_next and ih_prev from
struct ipovly (they don't exist anymore because they don't work when
pointers are 64bit).

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase