[maven-release-plugin]  copy for tag maven-parent-23

git-svn-id: https://svn.apache.org/repos/asf/maven/pom/tags/maven-parent-23@1402886 13f79535-47bb-0310-9956-ffa450edef68
tree: a90e65dd308d617bddde6d0f38c7b0ad9ec71b2a
  1. src/
  2. pom.xml
  3. site-pom.xml