unclejack fa7c88b484 fix container size computation: handle hard links
This change makes docker compute container size correctly.

The old code isn't taking hard links into account. Containers could
seem like they're up to 1-1.5x larger than they really were.
Upstream-commit: 78c843c8eff64da5e12725bdb111b18e51d82606
Component: engine
2013-11-19 13:53:34 +02:00
Description
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