HAMA-774: CompositeInputFormat in Hama

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1546951 13f79535-47bb-0310-9956-ffa450edef68
HAMA-822: Add feature transformer interface to improve the power and flexibility of existing machine learning model

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1548171 13f79535-47bb-0310-9956-ffa450edef68
HAMA-827: Add NamedVector

git-svn-id: https://svn.apache.org/repos/asf/hama/trunk@1548995 13f79535-47bb-0310-9956-ffa450edef68
Merge branch 'trunk' of https://github.com/apache/hama into trunk