MFC: 1.61
MFC: 1.61

Revert the (int *) -> (intptr_t *) conversion done as part of rev. 1.59
(MFC'ed in rev. 1.55.2.3) for IOCTLs where casting data to intptr_t *
isn't the right thing to do, fixing tap(4) on big-endian LP64 machines.

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