Solr 4.1.0 and various other updates

Hi Julien,

We've made a variety of changes that you may find useful:
1. Solr 4.1.0 support, including for SolrCloud
2. Some more control variables around indexing annotations and metadata
3. A couple of other little things
4. I've moved the LucidWorks integration off to a separate github project: https://github.com/lucidimagination/behemoth-lws

Note, this merge was a bit hard for me since I was fairly far behind master, but it compiles and all tests pass as a starter.  I expect we'll have a bit more work in terms of making.

Cheers,
Grant