in the current stack corruption I see, but we might as well avoid
using it where we can:

Don't engage the eventengine when we talk to the backend, just call
read(2) directly.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@595 d4fa192b-c00b-0410-8231-f00ffab90ce4