listing "/" on windows was not returning files from
the root because it was adding an extra separator
unconditionally. the docs for filepath.Clean say
The returned path ends in a slash only if it represents
a root directory, such as "/" on Unix or `C:\` on Windows.
so we need to add the slash only if it doesn't already have
one to avoid the double slash problem while still ensuring
the path ends with a slash.
Change-Id: I98afc1f1a06bb06035c7647ecb0da3214080162d
recursive copy had a bug with relative local paths.
this fixes that bug and changes the test framework
to use more of the code that actually runs in uplink
and only mocks out the direct interaction with the
operating system.
Change-Id: I9da2a80bfda8f86a8d05879b87171f299f759c7e
