* [xharness] Don't list unusable devices.
* [xharness] Show the list of candidate devices in the html report.
* [xharness] Prioritize devices depending on the interface speed.
Apparently Xcode 8.3 does not like the iPhone 5s simulator, and deletes it.
Every time Xcode is updated.
Which is slightly annoying when it affects the bots, since then iPhone 5s have
to be re-created on every bot.
So succumb to the pressure, and switch to using the iPhone 6 simulator instead.
* Add a server mode, which launches a web server (and a web page) that can be
used to interactively run tests and view their results.
* Add support for running test assemblies in a today extension (generating a
new set of projects, similar to how we generate tvOS/watchOS projects based
on the iOS project, we now generate a today extension project in addition to
the tvOS and watchOS projects).
* Load all the different tests (and show them in the html report, although
they show up as 'ignored'), even for disabled/ignored tests. This makes
disabled/ignored tests more visible, and also makes it possible to actually
run them using the embedded web server.
* Add support for running tests on device. Tests will be executed on multiple
devices simulatenously (any connected devices will be used).
* [xharness] Don't crash if we can't find a simulator.
* [xharness] Create a device pair if none applicable is found.
* [xharness] Use an enum instead of string values for the target.
* [xharness] Unify the simulator selection code between Jenkins and Wrench.
Split out the code to prepare the simulator from the AppRunner class,
which is now just handling the logic required for each test run.
This way it's easier to handle simulator preparation for multiple
test runs with the same simulator.
Also revamp logging to avoid printing directly to the console, but
instead use the logging classes that permit redirecting logging
to a file. This makes the html report show better logging.
* [xharness] Log simulator loading and handle any exceptions.
* [xharness] Add missing tests.
* [xharness] Throw a helpful exception instead of NRE when a simulator can't be found.
* [xharness] Fix null reference exception.
Rolf Bjarne Kvinge
Sebastien Pouliot
Timothy Risi
Sebastien Pouliot