Malleability extension -> mutate (shrink, expand) and random slicing + cutshift capabilities

Ramon Nourequested to merge
rnou/rslice into master

Malleability extension -> mutate (shrink, expand) and random slicing + cutshift capabilities Malleability is easy (+ , - markers), daemons xpanding automatically create + line in host file Malleability tool automatically removes shrink servers Also GKFS_EXPAND_ON_DEMAND is available --> Chunks are only transferred if clients ask for them (small penalty)

Solves some bugs also.

Merge request reports