Backport the rejection of non-'chunked' values in the transfer
  encoding; we simply don't know what, exactly to do with them.

  Backport the reporting of 'both C-L and T-E' when we encounter
  this edge case, setting the connection up to close down once
  we finish (perhaps we were victims of a request splitting attack).


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/proxy-reqbody-2.0.x@230727 13f79535-47bb-0310-9956-ffa450edef68