Let's save log.Error for things the user can take action on.
Moved all our diagnostics to log.Debug. We can ideally reduce them
even further.

AddrSplosion III - Revenge of the granular TTL

TODOs:
- need to consolidate all the versioning stuff into one package
- need to do the version check as a handshake, before further
  communication happens. we used to do this.

this will help us introspect what's going on.

it keeps failing early.

so that we dont get stuck dialing bad addrs first always.

This will mitigate the fd explosion, but slow down dials majorly
as any peer with more addresses than the rate limit will have
to wait a whole dial timeout (~15s)

This addr manager should seriously help with the addrsplosion
problem.

sharness/test-lib: remove some "cat" followed by |

The pattern "cat FILE | COMMAND" can be simplified
to just "COMMAND FILE" when COMMAND accepts files as
arguments.

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

Allow FSRepo components to depend on the config, add log config to eventlog

ipfs add -w

core/coreunix: Created 'AddWrapped' function to add files with a wrapped directory (to preserve filename in path)

docs folder and some fuse docs. closes #259

feat: keep profiling data from test runs

@jbenet @whyrusleeping thoughts?

ensure dagreaders are cleaned up after 'cat' command finishes

More preparatory refactors/fixes/cleanups for GCR