Re-enabled tests that I disabled by mistake :D
Small changes for performance, using linked lists while unfolding,
avoiding recomputation of Term string representations
Fixed a bug where some queries would not finish. The reason was that the
The SPARQL query translator generated a recursive program and hence, the
unfolder would never finish. The reason is that during translation we
hit the limit of INTs in Java, and the indexes for the rules clashed.
The fix (temporal) is to refctor INT indexes to LONG indexes.
Merge remote-tracking branch 'origin/develop' into develop