[maven-scm] copy for tag maven-ant-tasks-2.1.0

git-svn-id: https://svn.apache.org/repos/asf/maven/ant-tasks/tags/maven-ant-tasks-2.1.0@885846 13f79535-47bb-0310-9956-ffa450edef68
tree: 593b053aaa5d0eefa9c652e64117c73144a7637a
  1. README.txt
  2. build-tests.xml
  3. pom.xml
  4. src/