title: Checkstyle and Findbugs for changed files only on Jenkins (and/or Hudson)
body: <p>We work with a lot of legacy code and we think about introducing some metrics for new code. Is it possible to let Findbugs and Checkstyle run on changed files only instead of a complete project? </p>
  
  <p>It would be nice to assure that only file with a minimum of quality is checked in, but the code base itself is not (yet) touched and evaluated not to confuse people by thousands of issues.</p>