- Handle case where we already have torrent

- New Storage.main() for use in the release process
- Make torrent files in release process
- Stop tunnel after fatal if no snarks are running

apps/i2psnark/java/src/org/klomp/snark/SnarkManager.java

@@ -748,6 +748,14 @@ public class SnarkManager implements CompleteListener {
      */
     public Snark getTorrent(String filename) { synchronized (_snarks) { return _snarks.get(filename); } }
 
+    /**
+     *  Unmodifiable
+     *  @since 0.9.4
+     */
+    public Collection<Snark> getTorrents() {
+        return Collections.unmodifiableCollection(_snarks.values());
+    }
+
     /**
      * Grab the torrent given the base name of the storage
      * @return Snark or null