1. with naturalOrder=true make scan the rest to be consistent with seqscan [done]
2. add leftlink to data page to privide backward scan on index (<=| op) [done]
3. ItemPointer compression for indexes with order_by_attach
4. Compression addInfo
5. Remove FROM_STRATEGY ugly magick [done] 


BTREE:
1 fix changes in rum--1.0.sql [done]
2 adding using as addinfo
