add 66-boot,66-shutdown,66-shutdownd,66-hpr tools

package/deps.mak

package/modes

package/targets.mak

src/66/66-boot.c

src/66/66-hpr.c

src/66/66-shutdown.c

src/66/66-shutdownd.c

src/66/deps-exe/66-boot

src/66/deps-exe/66-hpr

src/66/deps-exe/66-shutdown

src/66/deps-exe/66-shutdownd

src/extra-tools/66-umountall.c

src/include/66/constants.h

src/include/66/hpr.h

src/lib66/deps-lib/66

src/lib66/hpr_shutdown.c

src/lib66/hpr_wall.c

src/lib66/set_livescan.c