I can see in the documentation you can't share a file to a folder that
has a file of the same name, so I assume the only way to duplicate a
file (keeping the history of course) is:

1. create a temporary project
2. share and branch to that project
3. rename the branched file
4. share and branch the renamed file back to the original project
5. delete the temporary project (and the branched file still contained
therein).

Is this really the simplest way to do this? (Drag'n'drop in VSS is
disabled completely where the source and target project are the same.)