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more complicated than a single file can carry.

cache_backend_cfg.c now contains the configuration and selection of
backends and directors.

cache_backend.c contains the connection and request management against
backends.



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git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2904 d4fa192b-c00b-0410-8231-f00ffab90ce4

in VCL.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2903 d4fa192b-c00b-0410-8231-f00ffab90ce4

It is possible to specify just the URL to be probed, or to specify the
entire HTTP request:

	backend b0 {
		.host = "127.0.0.1";
		.probe = {
			.url = "/test.jpg";
			.timeout = 224 ms;
		}
	}

	backend b1 {
		.host = "127.0.0.1";
		.probe = {
			# NB: \r\n automatically inserted after each string!
			.request =
			    "GET / HTTP/1.1"
			    "Host: www.foo.bar"
			    "Connection: close";
			.timeout = 0.3 s;
		}
	}

If the full request has not been completed within the timeout, the
backend will be set to down.


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Use table to dispatch director parsing.

Get trailing '}' into backend host ident string.




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by another simple director, it would be too hard to explain why they
shared statistics and harder yet to make them not do so.



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Use a hash for faster backend list search



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dlclose() VCL's when we throw them out.



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explicitly and uniquely identify all backend stanzas because they
have individual metrics.



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pre-allocated buffers instead of malloc().


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