Set 'join' output format for module dependencies and exclusions
The 'join' command used to print fields in the input order here, as we
wanted, but contrary to documentation. This has been fixed as of
coreutils 8.13, so we need to set the output format explicitly.
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This bug is fatal to building any packages with kernel-wedge, as all the
dependencies end up reversed and core modules are duplicated across many
packages.