Configurable analysis chains:

 Analyzers declared in solr schema for type of field named lux_text (or whatever the xml text field is called)
 are used when indexing and querying xml text field, and element and attribute text fields

 IndexConfiguration reorganized to make the access to fields, field names and types more sane.  Field definitions
 are now per-core, not global.

Previously deprecated function lux:field-values was removed (use lux:key).