After much discussion on dev@apr - it turns out that .dbg files served

  After much discussion on dev@apr - it turns out that .dbg files served
  a very limited purpose and their extraction interfered with the correct
  extraction of the (much more useful) .pdb files.  Eliminating them now.

  It also turns out that without the _src.pdb files for static libraries,
  one cannot build debuggable modules with any locals or type information.
  We need to copy those _src.pdb files into lib/ as well.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@98969 13f79535-47bb-0310-9956-ffa450edef68