Changes to support cbreak's Invariant Disks
Bring in InvariantDisks daemon, written by Gerhard Röthlin (@cbreak-black)
launchd plist for the InvariantDisks daemon
Partition support in SerialLinker

Partitions are now also linked in by-serial, with a media-path style
colon + partitionId suffix. This allows using stable IDs without a
fixed partitioning scheme.
Minor fixes

A tiny bit more consistency.
License Extension

In addition to the 3-Clause BSD License, also license under the CDDL.