Improved Datastore.clear
Made repeat_tests runnable.
Merge branch 'master' of https://github.com/twmarshall/tbd
We now depend on a locally installed version of reef.
Fixed a bunch of whitespace errors.
Merge branch 'master' into offheap2

Conflicts:
	core/src/main/scala/tbd/ddg/Ordering.scala
	core/src/main/scala/tbd/ddg/Sublist.scala