updated dropboxScalaTestRepo
Changed kmeans example to use L2-norm-square distance metric instead of L1 distance.
This makes it behave identically to Spark.
improved stencil scheduling support
print less debug
Object reduction test
minor fix
Merge remote-tracking branch 'origin/wip-clusters' into wip-clusters-gpu
GPU object reduction
Merge branch 'wip-merge' of https://github.com/stanford-ppl/Delite into wip-merge
Merge remote-tracking branch 'origin/wip-merge' into wip-clusters-gpu

Conflicts:
	framework/src/ppl/delite/framework/datastructures/DeliteStruct.scala
	framework/src/ppl/delite/framework/transform/MultiLoopSoA.scala
	runtime/src/ppl/delite/runtime/codegen/kernels/cuda/MultiLoop_GPU_Array_Generator.scala
Test object unrolled reduce working