Initial refactoring of mtd-storage to be a daemon. Modified CAL start up scripts to start it, wait for file signallling persistent storage is loaded. Modified helper scripts to use SIGUSR1 to trigger a persistent-save and SIGUSR2 to trigger a persistent-format. Internally, the daemon does thie identical functionality which will need to be changed for memory allocation fixups. Keeping mtd-storage executable in the filesystem for reference now, but eventually it should go away as well