hierarchical call number facet

the new field is   callnum_facet_hsim, and it replaces all the other call number facet fields.

Solr config changes:
there is a new Solr fieldtype and new dynamic field type  (solr schema.xml)
there are changes to solrconfig-slave  and solrconfig-no-repl  for this

I was able to get rid of some test code and some test data as part of this.

@lmcglohon  please review and merge if worthy
@jkeck   this is a heads up:  the new field will be   callnum_facet_hsim, and all the other call number facet fields will go away.   please let me know if this is a problem.