(The recent change that moved the compiler into its own subprocess
eliminates risk that a compiler error causes the management process
to die, you just do not get a sensible syntax error).

Fixes: #417



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@3546 d4fa192b-c00b-0410-8231-f00ffab90ce4