PID file; VCL code generation

[Christoph Schug]

Hi,

I just stumbled over Varnish and started playing around with it. While
I'm not a coder I've got two issues from the sysadmin's point of view.
I know, it's not good style being new on the list to place feature
requests in the very first post. Nevertheless, those are the very first
things I encountered on my initial deployment.

o PID file
  It would be very nice to have a PID file which can be used in some
  start/stop scripts. IMHO some killall(1) approch is not very nice,
  especially when running multiple instances of Varnish on the very same
  machine (e.g. release version and current SVN version).

o VCL code generation
  As far as I can see, lib/libvcl/vcc_compile.c just picks up some
  cc(1) for VCL code generation. As I have boxes with different C
  compilers installed I'm currently doing sed(1) substs at build
  time. Nevertheless I guess having a configurable path here would be
  benefical.

Thanks in advance,
-cs