Make manifest url reader accept both single and multiple manifests.
Add kubelet testing to integration test. Test that kubelet makes the requested containers. Check that the url manifest feature works.
Readability fixes & address review comments.
Make integration test the manifest url feature. Make kubelet's docker pull command testable.
Added some tests
Merge pull request #213 from lavalamp/fix_manifest

Better fix of #212
Merge pull request #237 from brendandburns/tests

Added some tests
Remove extractMultipleFromReader and extractSingleFromReader. Unused now after improvements in #212 and #213
Merge pull request #239 from jjhuff/dead_code

Remove extractMultipleFromReader and extractSingleFromReader.
bump(github.com/golang/glog): d1c4472bf2efd3826f2b5bdcc02d8416798d678c
Switch to glog for logging, bridge logging to glog.

1) imported glog to third_party (previous commit)
2) add support for third_party/update.sh to update just one pkg
3) search-and-replace:
  s/log.Printf/glog.Infof/
  s/log.Print/glog.Info/
  s/log.Fatalf/glog.Fatalf/
  s/log.Fatal/glog.Fatal/
4) convert glog.Info.*, err into glog.Error*

Adds some util interfaces to logging and calls them from each cmd, which
will set the default log output to write to glog.  Pass glog-wrapped
Loggers to etcd for logging.

Log files will go to /tmp - we should probably follow this up with a
default log dir for each cmd.

The glog lib is sort of weak in that it only flushes every 30 seconds, so
we spin up our own flushing goroutine.