[WIP] Fixes for "deploy from Windows"

The changes necessary to get brooklyn-sample running on Windows. Must be started with "-Djava.io.tmpdir=C:/temp"


Is there even a case when the third path will be used? 
Isn't it better to report an error (i.e. throw an exception) if no config values are present? After all /tmp isn't even portable across OSes so it will lead to more problems than it solves?