Libcontainer no longer provides placeholders for
unsupported platforms, which cause the Windows
builds to fail.
This patch moves features that are not supported
to platform-specific files.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit d1c34831e930c1f6b3de28cab3f4a358845a79d5)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>