Listing VM properties require specific object, so instead of collecting
all properties from all VMs (which may be denied by policy), simply
try to access properties (and display '-' when it fails).
QubesOS/qubes-issues#853
Those are no longer useful, as all actions are delegated to qubesd. Keep
--force-root argument (but ignore it and hide from help) for backward
compatibility with various scripts.
FixesQubesOS/qubes-issues#2684
Update GPL->LGPL for tools moved from core-admin repository.
While at it, change mailing address to www link, as suggested by FSF.
Cc: @woju
Cc: @rootkovska
For now comment out HelpPropertiesAction, as we don't have VM classes
here and accessing properties help require VM instances.
This needs some better idea...
