possible for various modules to add cli functions so they can
be manipulated on the fly.

CLI_AddFuncs() registers a set of CLI functions.  We operate
with three lists: the ones not shown in "help" because the
manager already showed them, the normal ones and the debug
commands which are also not shown in a plain "help".

Move the registration of cli functions out to the code they
belong in: VCL, BAN and VCA.

Give VCA a real Init function, and have the cli function ("start")
initiate the acceptor thread which listens for incoming connections.

Split CLI_Init() into CLI_Init() and CLI_Run()



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2598 d4fa192b-c00b-0410-8231-f00ffab90ce4