Thanks Mr. Trawick, backtraces can be very enlightening.

  This fixes two bugs, the segfault when researching index numbers,
  and another.  We don't hint anywhere that LanguagePriority is a
  cumulative setting, in fact the syntax doesn't suggest so either.
  Merges are always slow, there is no reason to make this even slower.

  So the patch has the LanguagePriority directive override any existing
  LanguagePriority list from an earlier container.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@92695 13f79535-47bb-0310-9956-ffa450edef68