Obsolete or fix libreload

Many hook library code look at the staging config but this is defeated when load is called by libreload vs during (re)config.

Some possible solutions:

• obsolete the libreload command
• add a reload entry (feasible but far to be easy)
• find a standard way to detect the case (hint: enforce the staging config to be empty in libreload)

Of course the first solution is the easiest...