* Updated Storage->read_file and Storage->write_file to support reading and writing on remote systems (untested though)
* Created System->change_shell_user_password() that changes a shell user's password by manually generating an sha512 salted hash of the given password and uses the resulting hash to modify the target user's password, so the password should never be visible in the process list. Works on both local and remote systems, though it still needs testing.
* Created Storage->rsync() to handle moving files between the local and a remote system.
Signed-off-by: Digimer <digimer@alteeve.ca>
