For our release builds, we're just going to integrate the UWPDesktop CRT
into our package and delete the package dependencies.  It's very
difficult for users who do not have access to the store to get our
dependency packages, and we want to be robust and deployable everywhere.
Since these libraries can be redistributed, it's easiest if we simply
redistribute them.

Our package grows by ~550kb per architecture (compressed) because of
this. I've added validation that we don't have both the libs _and_ the
dependencies in the same package.

Fixes #3097.

This reverts commit b42d184.