Revert 1/2 of my last commit, keep Apache2 as the default name so we don't
  need to keep syncing this with releases.

  Retain the other 1/2 - a better message since apr's must be in the build
  tree srclib/ not the install target srclib/.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@356852 13f79535-47bb-0310-9956-ffa450edef68