This commit aligns how the file provisioner should work on all host
machines. It ensures that a `/.` is only applied if the user intended
to upload a folder to a destination under a different name. It ensures
that if uploading to a windows guest with a different destination folder
name, it does not nest the source folder under that name so that it
works the same as it does on linux platforms. It also updates the
behavior of the winrm upload communicator by allowing an array of paths
to be uploaded instead of a single file or folder to allow for this new
functionality for windows guests.
a9564b2137