* Revert to old behaviour: Even if we detect a bad character: Formally decode

  string correctly and do not mess up the string. Let the caller decide what
  it wants to do with the result according to our return code.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@606776 13f79535-47bb-0310-9956-ffa450edef68