HAMA-770: add teat case to TestSmallLayeredNeuralNetworkMessage
HAMA-770: add test case TestSmallLayeredNeuralNetwork
HAMA-780: New launched child processes by fault tolerance may not be able to contact each other

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1505410 13f79535-47bb-0310-9956-ffa450edef68
HAMA-782: The arguments of DoubleVector.slice(int, int) method will mislead the user.

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1505413 13f79535-47bb-0310-9956-ffa450edef68
HAMA-770: deleted useless classes
HAMA-770: deleted useless test classes
Merge remote-tracking branch 'upstream/trunk' into ann