Recursive Watcher, Moved From/To

Hey Nick,

thanks again for your great project. One of my projects strongly relies on it!
I wrote two classes that I think were missing in inotify-java.

1) RecursiveWatcher
In another question I asked you about a recursive watcher, i.e. a watcher that monitors newly created folders as well and dynamically adds/removes watches for all sub-folders. Since the given classes did not support that, I wrote a class called RecursiveWatcher that does exactly that.

EXAMPLE:
int wd = watcher.addRecursiveWatch("/home/user/Photos", ...);
watcher.addRecursiveListener(wd, new InotifyEventListener() {
  public void filesystemEventOccurred(InotifyEvent e) {
      System.out.println(e);
  }
  ...
});

The recursive watcher first indexes all sub-directories of the "Photos" folder, and then sets watches to each of them e.g. "Photos/Album1" and "Photos/Album2". When a new album is created, or sub-folders are added to "Photos/AlbumXX", it also registers watches for these folders. Hence events are thrown for all subfolders.

2) BufferedRecursiveWatcher: Match Moved_From/To events
A second thing I really needed for my application was to not only receive Move_From and Move_To events, but directly receiving Move_From_To events from the watcher. Since inotify throws these events separately, I wrote a little class called BufferedRecursiveWatcher (based on the RecursiveWatcher from above), that keeps a 200ms buffer for file system events and matches Moved_To/From events together. Instead of firing all events directly, it delays them and groups the Moved_From/To events.

Are you generally interested in adding my code to the project? Unfortunately it is based on the 2.0.1 version and needs some cleanup and testing. If you are interested, I could branch the 2.0.1 version and upload it to Launchpad...

Regards,
Philipp