@jbenet

@jbenet this removes everything under the path

This may have been failing before.

let me know if this looks off @whyrusleeping @jbenet

it's unclear what this test case is meant to protect, but passing an empty datastore value no longer has bearing on node construction. Datastore setup now occurs in repo.

p2p/net/swarm: fixed bugs in swarm err closes

p2p/net/swarm: dial once at a time

p2p/net/swarm: fix connect self problems