Test Graph.deltaJoinVertices and VertexRDD.diff
Revert changes to project/SparkBuild.scala

Changes were made in 3fc4534d19a7abf7dcb6c9ebe17e5e29f1febbc5
Fixed a bug that variable encoding doesn't work for ints that use all 64 bits.
Merge pull request #88 from amplab/varenc

Fixed a bug that variable encoding doesn't work for ints that use all 64 bits.
Re-roll last iteration of static Pregel loop
jobWaiter.synchronized before jobWaiter.wait
Change the name of input ragument in ClusterScheduler#initialize from context to backend.

The SchedulerBackend used to be called ClusterSchedulerContext so just want to make small
change of the input param in the ClusterScheduler#initialize to reflect this.
Use mask for dynamic Pregel
Merge branch 'pregel-replicate-changed' of github.com:ankurdave/graphx into pregel-replicate-changed
Test prevVTableReplicated code path
Simplify GraphImpl.deltaJoinVertices
Merge branch 'pregel-replicate-changed' of github.com:ankurdave/graphx into pregel-replicate-changed
A left over akka -> akka.tcp changes
FutureAction result tests
Fixed a bug in VTableReplicated that we are always broadcasting all the vertices.
Merge pull request #232 from markhamstra/FiniteWait

jobWaiter.synchronized before jobWaiter.wait

...else ``IllegalMonitorStateException`` in ``SimpleFutureAction#ready``.
Minor update.
Merge branch 'wip-scala-2.10' into akka-bug-fix
Rename SparkActorSystem to IndestructibleActorSystem
Fix long lines