changes:
- The wizard was modified to create the configuration path and to run it
at more expected times.
- max_mdcache_size configuration option to prevent the cache directory
from growing beyond a set value.
- md_max_differentials configuration option to govern when a new level 0
backup is run.
- The code now ensures that all metadata parts are downloaded before
starting the extract operation.
- Asymmetrical differential backups are prevented from running.
- Some error messages were improved.
- A couple of bugs in the differential backup code path were fixed
ok jasper@
5053158146