This is avoid having supplementary directories at
SS_SERVICE_ADMDIR or SS_SERVICE_USERDIR mostly in case of crash of
module parse process. In that case, as the resolve file of the module is not
created yet, it cannot be found at remove time.

This reverts commit 87bd69c6.

add servicedir entry at live addon. Add enabled at configuration group entry. Move status entry from path to live addon

simplify interface of service_is_g and its functionality, provide service_get_treename as replacement

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