read-installed@3.1.2

Don't mark linked dev dependencies as extraneous.
npm-registry-couchapp@2.5.3 for more reliable tests
Correct the plan in the cache-add-localdir-fallback test
Merge branch 'bump-npm-registry-couchapp' of https://github.com/iarna/npm into iarna-bump-npm-registry-couchapp
getCacheStat: always return consistent data types to cb
addLocalTarball: chown from the first created dir, not just the target dir
cache: set ownership properly on generated package.json file