This shaves approx 100 bytes of stored objects, and is a major step
to avoiding storing absolute pointers in persistent stevedores.

This bumps the vrt.h major version.

As before, libedit is preferred over libreadline.

Fail configure if neither is found or if libedit includes are missing.
Require readline history support (as varnishadm needs it).

Previously, if only libreadline was found, all binaries were linked
against it. Now only binaries getting linked with LIBEDIT_LIBS will
get linked aginst readline if libedit is not found.

If configure succeeds, a build should not fail any longer due to
libedit/libreadline headers missing.

Fixes #1555

When multiple arguments were passed to vmod_hash_backend, only the
first argument was re-used for the number of arguments passed.

Fixes #1568

Until reimplemented we have slightly less info in panics about objects.

Submitted by:	mattrobenolt
Approved by:	mithradir

Though unquoted Etags are commonly seen in the wild, according to rfc2616
the entity-tag itself should be quoted.

If we gzip/gzunzipped the object, the C-E header we produced controls
and if the 304 contains an ETag, it must be weakened.

	int
	foo()
	{
		int bar;

		(void)bar;
		[...]
	}

Isn't valid C because bar has an undefined value when you cast its
value away.  Yes, many thanks to ISO-C for that gem.

Memset the variables to zero instead.

the duplicated test for :status, Last-Modified and ETag.

Fixes #1567

mechanism.

Use vfp_ctx as argument for ObjSetattr()

Make OA_ESIDATA the first "real" attribute where allocation is done
by the ObjSetattr() function.

account for the extra two digits made available for VCL.

structure from that while we still need it.