[MERGE] Use relative paths with shelve

[Aaron Bentley]

John Arbash Meinel wrote:
> ^- I'm a bit curious why you feel the need to use a "directory='.'"
> argument
> rather than using "builtins.tree_files()".
> Considering you can do:
> bzr add workingtree/path/file
> 
> but
> 
> bzr shelve workingtree/path/file
> 
> Will fail with your current design.

I've never felt very happy with that model.  It's fine for single files,
but specifying "bzr shelve path/workingtree/file1 path/workingtree/file2
path/workingtree/file3 path/workingtree/file4" seems like a real pain.

Whereas specifying "bzr shelve -d path/workingtree file1 file2 file3
file4" seems a lot nicer.

Aaron