apachesolr 6.x-1.0-alpha3

D5 and D6 now synced and aligned on ALPHA-3 because new features are still expected.

- Only one form setting per block for facet limits.
- Validation on block form now works.
- f.fieldname.facet.limit syntax.
- facet.field dynamically generated from block list.
- using individual dynamic fields for each vocabulary for accurate facet counts.
- fixed bug in author facets that excluded Anonymous from facet list.

Note: You will have to reconfigure your facet blocks after this update.