Moved ELFLoader from cloudius.cli to cloudius.util

Signed-off-by: Or Cohen <orc@fewbytes.com>
Added daemonizeIfNeeded helper method for commands

Useful for ELFLoader (run) and RunJava (java)

Signed-off-by: Or Cohen <orc@fewbytes.com>
Migrated run command from previous CLI

Also implemented another little helper to resolve paths passed in from commands

Signed-off-by: Or Cohen <orc@fewbytes.com>