Add missing license headers.
This plugin now passes the checks done by RAT.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1525444 13f79535-47bb-0310-9956-ffa450edef68
20 files changed
tree: 302f00ed21313808243c3736f7a22e894b2d3f7f
  1. src/
  2. pom.xml