A new workload for testing context switching between applications.
Uses googlephotos as the producer workload and gmail and skype as
the consumer workloads.
This allows workloads to be launched in a pre-determined orientation not the orientation of the physical device itself.
Updated the productivity workloads to take advantage of this new facility.
Check in missing UiAutomation .class files
Fix generation and deletion of dump sys logs including renaming to a standard [test tag]_[test number].log format
Improved Reader to run across a range of devices with subtlety different layouts and views
The change will allow us to use UiAutomator methods introduced in API 18, such as resourceId.
As a consequence of the change all dependent uiauto workloads have been incremented also.
Tested by rebuilding all uiautomator workloads. They were not run on devices.
