rc.d/{powerd,envsys}

[Edgar Fuß]

I have a case where the default limits on a sensor (probably set by the BIOS) 
are wrong and are prone to cause an immediate shutdown of the machine when
powerd is run.
I can correct the values in envsys.conf. However, upon startup, powerd 
may have been started before rc.d/envsys is run.
So I suggest that rc.d/envsys should get an additional
        # BEFORE: powerd
line.