Using the new lucene spatial contrib with lucene 2.4

I was using locallucene but I encountered a problem in which it bombed whenever there were deleted documents in the index.  I had to fix it.  After some trial and error (actually lots), I ended up using the reincarnated locallucene which is part of the contrib/spatial package in lucene.  It's for lucene 2.9

I made a few changes to back port it to lucene 2.4.1 and all my unit test passed.  Yay me!

If you want to see/use what I did, the code is in the grails-stitches plugin code.  I didn't change package names or anything.