MFC addition of bsdiff and bspatch to the base system, in order to allow them to be used by portsnap(8) in 6.0-RELEASE.
MFC addition of bsdiff and bspatch to the base system, in order to
allow them to be used by portsnap(8) in 6.0-RELEASE.

Approved by:	re (kensmith)

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