stub for GatherBlock.
Merge branch 'aql2' of ssh://github.com/triAGENS/ArangoDB into aql2
count, remaining, getBlock for GatherBlock.
interim commit.
Merge branch 'aql2' of ssh://github.com/triAGENS/ArangoDB into aql2
Merge branch 'aql2' of ssh://github.com/triAGENS/ArangoDB into aql2
adding variables/sort direction in _elements to GatherNode.
about to delete some junk
cleaning up.