[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"


worth keeping a note of why we've switched from parsing "jar" ourselves to delegating to java,
including any URL which breaks the old routines
(adding it as a test case - apologies if you've already done so ... probably would have been easier if we hadn't lost test cases earlier!)