title: Inject the Mercurial working directory changeset id such as (838cb9c0367e) into properties file via Maven?
body: <p>We use Maven for our builds and Mercurial for our changesets.  While our software has a major version handled already we would really like to be able to know what Mercurial changeset was used to build any server that runs our software.</p>
  
  <p>Does anybody know of a way in Maven to grab the  working directory's changeset in Mercurial and get it into a properties file or something so we can then display it somewhere in our application when sys admins do a "sanity check" against what  version is currently running?</p>