update to recent bazil.org/fuse

Spring clean

shareness needs the go-random/random utility. Godep doesnt know that.

This way, the following tests can already used the newly build libraries and don't have to build them again.

wasn't used by ipfs directly, only by two main packages of dependencies that we tracks

github.com/h2so5/utp/benchmark/main.go
github.com/jbenet/go-random/random/random.go

wantlist command

make wantlist updates to connected peers happen async

make wantlist updates to connected peers happen async, dramatically improves performance between connected nodes

more understandable errors from merkledag decoding

Add a few tests to fuse/readonly

make the providers manager respect contexts