. Removed the usage of 64 bit functions in top.c. Compiles successfully.
. Scaling 64 bit values to 32 bit is removed.
. Retain make64 instead of using | with shift.
. Add order cycling display
. move mfs-specific struct, constants to mfs/, so
mfs-specific, on-disk format structs and consts are
fully isolated from generic structs and functions
. removes de and readfs utils
