Fix beforeinstall target: use chflags /usr/bin/chpass ONLY if chpass present
Fix beforeinstall target:
use chflags /usr/bin/chpass ONLY if chpass present

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