Do not warn the user about this feature. It only used on very specific case like module migration process.
Badly used, this features can easily broke the sanity of the system state

add fdholder and oneshotd service at start/stop of scandir. Be able to be session leader at start time for regular user

remove svc_send.c file

Module and bundle should only know about services inside its.
Spawn a new process with its own graph when dealing with module/bundle services.