GIRAPH-650: Exception in GiraphConfiguration initialization (majakabiljo)
GIRAPH-653: Hadoop_non_secure broken (majakabiljo)
GIRAPH-639: Add support for multiple Vertex/Edge inputs (majakabiljo)
GIRAPH-651: giraph-hive tests
GIRAPH-618: Website Documentation: Aggregators (and sharded aggregators) (majakabiljo)
Merge remote-tracking branch 'origin/trunk' into yourkit-profiling
GIRAPH-592: yourkit profiling