Added version 2.15.2 to maven-scala-plugin.

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1563652 13f79535-47bb-0310-9956-ffa450edef68
Starting a new 1.0 Release

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1563661 13f79535-47bb-0310-9956-ffa450edef68
Added type parameter to AbstractObjectValueTypeMap template to fix warning.

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1563682 13f79535-47bb-0310-9956-ffa450edef68
Minor formatting fix

git-svn-id: https://svn.apache.org/repos/asf/mahout/trunk@1563789 13f79535-47bb-0310-9956-ffa450edef68