Add Win8 projects.
Add Splat to the test project.
Win8 test project.
Rename testing project.
Update OutputPath and IntermediateOutputPath
Add Win8.1 to MakeRelease.
Add stub files for WinRT451.
Merge remote-tracking branch 'origin/add-back-windows8-support' into rxui6-master
We probably don't need *two* MobileSample projects always loaded