p-u 3.0.21

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1639736 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release maven-assembly-plugin-2.5.2

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1639737 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1639739 13f79535-47bb-0310-9956-ffa450edef68
Pleasing the RAT

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1639743 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release maven-assembly-plugin-2.5.2

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1639744 13f79535-47bb-0310-9956-ffa450edef68