srm to rm

Switch to rm to save time on the rebuilds.
uitsRestoreID file

Made it so the copyRestoreFiles script will add a dot file to /var/db
for the Unique ID. The firstBootAfterJSS will read the dot file added
by the copyRestoreFiles script.

This should solve problems going forward if applications add files and
directories to the Shared folder.
p to cp command

added the p to the cp command to keep the time stamps.