Determining the count of active vertices

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1498066 13f79535-47bb-0310-9956-ffa450edef68
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 branch 'trunk' of http://github.com/apache/hama into trunk
Sogou special, filter queue for new message type.