When using the MultiJarLoader as the main class, it will use a
configuration file for the java loading.  Each line in the file will be
used to start a main, you can use -jar in each line or specify a main
class.

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
Reviewed-by: Tomasz Grabiec <tgrabiec@cloudius-systems.com>
Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>