[Varnish] #1512: Changes to bereq are lost between v_b_r and v_b_f

[Varnish]

#1512: Changes to bereq are lost between v_b_r and v_b_f
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 Reporter:  fgsch     |       Owner:  phk
     Type:  defect    |      Status:  closed
 Priority:  normal    |   Milestone:
Component:  varnishd  |     Version:  trunk
 Severity:  normal    |  Resolution:  fixed
 Keywords:            |
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Comment (by Lasse Karstensen <lkarsten@…>):

 In [02ac12513cb5b7e4fda7e12c3a88f3000dd198e1]:
 {{{
 #!CommitTicketReference repository=""
 revision="02ac12513cb5b7e4fda7e12c3a88f3000dd198e1"
 Ensure bereq changes are not lost across vcl_backend_xxx methods

 Add std.rollback() to rollback req or bereq and mark the builtin rollback
 as deprecated.

 Original diff by Nils Goroll. Tweaks and reworked after phk comments
 by me.

 Fixes #1512

 Conflicts:
         bin/varnishd/cache/cache_fetch.c
 }}}

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Ticket URL: <https://www.varnish-cache.org/trac/ticket/1512#comment:4>
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