Tried to resolve #308 using dmidecode instead of sysfs, which is now
only fallback. But we likely still need to apply some sanity checks on
the resulting lipstats as dmidecode itself is also not unaffected by
faulty hardware.

Also some other small changes. lsusb ist not yet disabled. Still trying
to find a way to gather that information somehow.
Signed-off-by: Lars Beckers <lars.beckers@rwth-aachen.de>

lipinfo.cfg is most probably generated by lipck and contains
the ubuntu flavor (e.g. kubuntu), version, etc.

Configfile redirects to our grub.cfg.

Since the target filesystem is fat32 in most cases the executable
flag is irrelevant. However, the removal prevents accidental
calls.

still not optimal, e.g. the help message cannot be printed without
preceded warnings.