[dm-devel] order of preference / multipath.conf

[Christophe Varoqui]

The hardware table is a "device" array.
This array has no precedence over the array fetched from the config
file.

The logic thus looks like ...

1) Multipaths section (in /etc/multipath.conf)
1bis) N/A
2) Device section   (in /etc/multipath.conf)
2bis) Internal default (hwtable.c) 
3) Defaults section (in /etc/multipath.conf)
3bis) Internal default (config.h)