Merge r105297, r105664 from trunk:

  * server/util_filter.c (ap_save_brigade): Handle an ENOTIMPL setaside
  function correctly.

  * server/util_filter.c (ap_save_brigade): Be more tolerant of a bucket
  type which neither implements ->setaside nor morphs on ->read, such as
  the mod_perl SV bucket type in mod_perl <1.99_17; defer returning an
  error in this case until after calling setaside on each bucket.

PR: 31247
Reviewed by: jorton, trawick, stoddard


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.0.x@125745 13f79535-47bb-0310-9956-ffa450edef68