Conflicts:
	cmd/ipfs/ipfs.go

- cleaned up cmd help
- ipfs name publish [<name>] <ref>
- ipfs name resolve [<name>]
- publish validates <ref>
- both validate n args

cc @whyrusleeping

cc @jbenet

cc @whyrusleeping

    type NameSystem interface {
      Resolver
      Publisher
    }

should say it all.

cc @whyrusleeping

this is useful so that loggers are all setup during tests

- use log.* instead of u.*
- use automatic type conversions to .String()
  (Peer.String() prints nicely, and avoids calling b58 encoding
  until needed)

We'll want a `type blocks.Block interface {}` later, but
for now, make sure Blockstore uses ptrs for both Get and Put.

+ fix NewBlock output compile error

the u.Hash error can be safely ignored (panic) because multihash
only fails from the selection of hash function. If the fn + length
are valid, it won't error.

cc @whyrusleeping

bootstrap cmd

- safer parsing
- multiple inputs
- add: dup detection
- common cfg writing

working on dag modification structures, factored out the data format into an importer subpackage and added more ipns tests

This set of commits implements the bootstrap commands,
following from the description in #117