Take default_vcl out of heritage.

Keep track of all compiled VCL files and delete them at
exit.

After starting child, use CLI to load all vcl programs
and then issue "start" via the CLI.

In the cacher, don't start the acceptor until we get
a start command.



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@637 d4fa192b-c00b-0410-8231-f00ffab90ce4