* Fix tvOS storage issues.
On tvOS devices, the ApplicationSupport directory cannot be used.
Unfortunately this doesn't come up in simulator testing, only on device.
This hasn't been fully tested on device but given that any writes to the
ApplicationSupport directory fail on tvOS, this change can't break much.
Fixes#6612
@defagos can you please give this a test?
* Fixed changed dir name for RC
* Fixed test naming, too.
* Fix the documentation comment for GoogleUtilities.
* Updated changelog.
* Review feedback
Ryan Wilson