- Now prepending node LBTYPE into node byte encoding
- Send NodeId back to client when saving
- Had to revert error raising when nid collision in node save, not
compatible with logbase concept
- When running logbase_test.go, about half the time, there would be a
failure when a node was sought from storage.  I traced it to a basic
flaw in the Logfile Zap method (fileops.go) which did not update
existing master catalog value location entries even though chunks were
being removed from logfiles.  Fixed.