* src/options.c,src/minikafs.c,src/afs5log.c: merge Jan Iven's changes
to add a "nullafs" option, so that when we're guessing the principal
name for an AFS service we'll try the no-instance version first
(#249558)
* src/minikafs.c: if we're going to guess the realm name because
the whereis pioctl failed, guess the far-more-likely-to-be-correct
upper cased version of the cell's name than the cell's name.