[MERGE] FileCollection

[Aaron Bentley]

Aaron Bentley has voted -0.
Status is now: Waiting
Comment:
It looks like you're accidentally removed the fake NFS transport.
Also, it would be idiomatic to use self._names.discard(''), rather than 
"if '' in self._names: self._names.remove('')

And I'm surprised to see you say it makes sense to remove support for 
unlistable transports, e.g. http.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C1184408101.16666.16.camel%40localhost.localdomain%3E