(packaging) Update FACTERVERSION to 2.0.1
Merge branch 'stable' into facter-2
(FACT-231) Avoid system stutter for Darwin virtual fact

Using SPDisplaysDataType causes lagging issues on pre-2013 Macs, so use
other sources from system_profiler which do not have the issue and are
also more reliable.
Merge branch 'pull-608' into facter-2

This closes GH-608