the directory was starting to get pretty large and
it was making it hard to pick concise names for
types and variables. this moves the location
stuff into a cmd/uplinkng/ulloc package, the
filesystem stuff into a cmd/uplinkng/ulfs package,
and the testing stuff into a cmd/uplinkng/ultest
package.
this should make the remaining stuff in cmd/uplinkng
only the business logic of how to implement the
commands, rather than also including a bunch of
helper utilities and scaffolding.
Change-Id: Id0901625ebfff9b1cf2dae52366aceb3b6c8f5b6
