HAMA-769: Intermediate queue's close method is not called, clean work may be omitted.

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1499971 13f79535-47bb-0310-9956-ffa450edef68
Omitted commitment for HAMA-769, DiskQueue should not clean parent directory for each iteration.

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1500000 13f79535-47bb-0310-9956-ffa450edef68
HAMA-773: Matrix/Vector operation does not validate the input argument.

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1500189 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk
HAMA-671: Clean up Maven build scripts

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1500598 13f79535-47bb-0310-9956-ffa450edef68


git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1500607 13f79535-47bb-0310-9956-ffa450edef68
HAMA-775: Disable compression option in hama-default.xml

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1500635 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk