remove compatibility with version under 0.5.0.0

package/deps.mak

src/66/66-boot.c

src/66/66-hpr.c

src/66/66-inresolve.c

src/66/66-inservice.c

src/66/66-instate.c

src/66/66-intree.c

src/66/66-parser.c

src/66/66-scanctl.c

src/66/66-scandir.c

src/66/66-shutdown.c

src/66/66-shutdownd.c

src/66/66-tree.c

src/66/66-update.c

src/extra-tools/66-echo.c

src/extra-tools/execl-envfile.c

src/include/66/hpr.h

src/include/66/resolve.h

src/include/66/svc.h

src/lib66/backup_cmd_switcher.c