- bzero the CCB header in getdevtree() and set the path properly, to
avoid having random garbage in the CCB header.
- if the lun isn't specified in a device specifier, it should default to
0, not whatever random data happens to be in the lun variable.
- move the prototype for getdevtree() out from under #ifndef MINIMALISTIC,
since it is used in both cases.
Submitted by: Marius Strobl <marius@alchemy.franken.de> (mostly)
MFC After: 2 weeks
2a413b2918