Downgrade checkstyle-plugin to be compatible with Java 6 (see https://maven.apache.org/plugins/maven-checkstyle-plugin/history.html)

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/configuration/trunk@1754355 13f79535-47bb-0310-9956-ffa450edef68
1 file changed
tree: 93a2bb48d07a97c6e3276c2fe9bc7b44756fd4af
  1. conf/
  2. src/
  3. LICENSE.txt
  4. NOTICE.txt
  5. pom.xml
  6. PROPOSAL.html
  7. RELEASE-NOTES.txt