HAMA-795: test bug fix

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1518436 13f79535-47bb-0310-9956-ffa450edef68
HAMA-749: Build for C++ Pipes

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1518963 13f79535-47bb-0310-9956-ffa450edef68
HAMA-587: Fix unit test fails. Use just default ZK session timeout.

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1519239 13f79535-47bb-0310-9956-ffa450edef68
Minor change.

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1519240 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of https://github.com/apache/hama into trunk