Build dspace kernel with Lucene 4.3.0

Currently, dspace is based on Lucene 3.5.
Lucene 4.3.0 support spatial search which can be useful.

The migration was based on the following pages:
http://lucene.apache.org/core/4_3_0/MIGRATE.html
http://lucene.apache.org/core/4_3_0/core/index.html