cowdancer - 0.90+b1 main

Tries to make copy-on-write semantics upon hard-link copied
directory trees generated with 'cp -la'
.
'cow-shell' command invokes a shell session. Within that session,
under the directory cow-shell was invoked,
cowdancer will create a new file when existing i-nodes are opened for
write.
Useful for quick scratch workspace and experimentation.
.
For a useful Debian tool, try cowbuilder.