"auto", "cold" or "warm".

Regularize the names in the generated code.
Pass VCL events to backends.

The VRT side of things still needs attention

varnishd.  (special because -j must always be the very first argument)

	root		-- you must be root
	user_varnish	-- system must have a "varnish" user
	group_varnish	-- system must have a "varnish" group

- As VRB_Cache returns -1 upon error, so should VRT_CacheReqBody
- 0 is a valid body size, so it shouldn't be used for signalling errors
- VRB_Cache should return number of bytes when already cached
- VRB_Cache: return -1 on insufficient bytes also

over it with vdef.h.

Confine __unused to include/vtree.h at the same time.

reveal to vapi/vsm.h for it to work, and the truly private parts
needed to implement things internally (vsm_priv.h)

This is necessary for VMODs which implement secondary hash-keys.

Patches from martin@ with some minor tweaking by me.