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I'm not entirely clear on Go's scoping (there's some text I can't
quite parse here [1]), but it seems like the := version (because this
is the first time we use 'err') was masking the function-level 'nd'
just for this if block.  That means that after we get out of the if
block and return to the start of the for-loop for the next pass,
nd.Links would still be pointing at the original object's links.

This commit drops the :=, which fixes the earlier:

  $ ipfs ls QmXX7YRpU7nNBKfw75VG7Y1c3GwpSAGHRev67XVPgZFv9R/static/css
  Error: no link named "css" under QmXX7YRpU7nNBKfw75VG7Y1c3GwpSAGHRev67XVPgZFv9R

so we get the intended:

  $ ipfs ls QmXX7YRpU7nNBKfw75VG7Y1c3GwpSAGHRev67XVPgZFv9R/static/css
  Qme4r3eA4h1revFBgCEv1HF1U7sLL4vvAyzRLWJhCFhwg2 7051 style.css

It also means we're probably missing (or are unreliably using) a
multi-level-path-resolving test.

[1]: https://golang.org/ref/spec#Declarations_and_scope

core: add context.Context param to core.Resolve()

godeps: update metrics (freebsd build fix)

add link to community contributing #1088

godeps: rewrite import path

commands/object: remove objectData() and objectLinks() helpers
resolver: added context parameters
sharness: $HASH carried the \r from the http protocol with
sharness: write curl output to individual files
http gw: break PUT handler until PR#1191

ipnsfs/system: Fix 'retreive' -> 'retrieve' typo

From 93b06f34 (Add timeout to ipns resolution at startup, 2015-04-24,
#1133).

mild refactor of bitswap

correct the blocksize calculation for link blocks

update hash for bigfile

make comments match the code in secure channel implementation

quick fix for OOM panic that has been plaguing us

try harder to not send duplicate blocks

increase iptb test stability

fix append bug and overwrite/truncate bug

update iptb dependency again, and pick different ports for each iptb cluster

try and fix godeps crap

Improve parse_test.go

core/commands/internal/slice_util: Remove this unused package

godep: update go-msgio

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

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

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

Now also check that we get the right arguments from
the parsing.

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

Let's document how stdin enabled arguments currently
work by adding some tests.

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

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

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

Record Datastore metrics for flatfs and leveldb

Add package comments to packages that are missing them

write memory profiles every 30 seconds when enabled

dont create a new ticker each loop

Currently garbage collection is triggered manually and there are no
age-restrictions on the removal.  I expect we'll eventually follow Git
and auto-launch garbage collection when we hit some threshold of disk
consumption (gc.auto).  I expect we'll also follow Git and keep
unpinned or unreachable objects (gc.pruneexpire, etc.).  But we don't
seem to do either of those yet.