fixing mutability issues in ipns
fix writes zeroing files
godeps: updated datastore
added core logging
+ fs ds + thread safe
use string datastore keys.
add writerAt for fuse writes
Merge branch 'ipns-dev' of github.com:jbenet/go-ipfs into ipns-dev
a little more progress... and some debugging code
DNSResolver: use isd.IsDomain

this commit dedicated to @whyrusleeping
make the tests pass!
Merge branch 'ipns-dev' of github.com:jbenet/go-ipfs into ipns-dev