[smila-dev] Configurable DeltaIndexing

[<Daniel.Stucky@xxxxxxxxxxx>]

Hi all,

I just checked in the implementation of
https://bugs.eclipse.org/bugs/show_bug.cgi?id=279242, making delta
indexing configurable.

In your data source configuration you now have to provide the element
<DeltaIndexing> with one of the following values
- full
- additive
- initial
- disabled

Note that in case of "disabled" you may also omit to start any
DeltaIndexingManager at all. The reference to DeltaIndexingManager in
Agent- and CrawlerController is optional, now. For any of the other
values a DeltaIndexingManager must be available!

Please report any issues.

Bye,
Daniel