HAMA-818: Remove useless comments in GroomServer

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1545490 13f79535-47bb-0310-9956-ffa450edef68
HAMA-821: Fix bugs in KMeans example and make output more readable

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1545568 13f79535-47bb-0310-9956-ffa450edef68
HAMA-812: In local mode BSPJobClient.close throws java.lang.IllegalArgumentException: not a proxy instance

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1545638 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of https://github.com/apache/hama into trunk