gzip file, no matter which of the 8 bits of a byte the last bit
lands in.

residual stopbit we expect.

to come.

indeed gzip'ed data and extracts the magic bits should it ever
be included from ESI.

In general Varnish is not in the business of inspecting content
and with the exception of ESI we still do not do so.

What we do here is make sure that we do not serve corrupt data,
in the same sense as we bail out on chunked encoding trouble or
HTTP header trouble from the backend.

For a limited number of cases we can now esi:include a gzip'ed
object into a gzip'ed ESI object.

There is less than 1 chance in hell this will work for you in
practice, I need to handle the N-1 other cases of last bit
and stop bit combinations in the gziped object, but that is
just a small (but tedious) matter of programming.

objects when we know them.

For now: use malloc for gzip instead of running out of workspace.

in an gzip'ed ESI object.

ESI object.

in a gzip'ed ESI object.

included files can get at them.

so we can do ESI, then gzip again to store it.

Add a vef_read() function which implements the esi_syntax&8 bit,
it is too late to do it when we call VEP_parse().

so it applies to all fetch methods.

via sp->wrk->storage.

to tuck in the last storage segment sitting on sp->work->storage,
rather than have this code duplicated througout all the VFP->end()'s

instance into sp->obj.

on reception

ESI+GZIP testcase

and return the offsets we need to compose the VEC string.

The default callback function is a 1:1 mapping.

so we can combine the CRC32 values.