update rb-inotify version now that java gems are available

There is no java gem for ffi > 1.4.0 and the rb-inotify only requires > 0.5.0 so lets fix this to 1.4.0 for now to maintain jruby compatibility

https://github.com/ffi/ffi/issues/257

*Update* Gems are now avail for java so bumping ver to 0.9.0 for rb-inotify and removing fix for ffi