Interesting new feature

[Alan DeKok]

  I've checked in some code to git that allows HUP to reload virtual
server configurations.  For now, all it does is reload the authorize,
authenticate, accounting, pre-proxy, etc. sections.  It does NOT reload
listen sections, client sections, or anything else.

  However, it now allows you to update the policies in the virtual
server configuration on the fly.

  If there is an error loading one of the virtual servers, then the NEW
configuration for that virtual server is ignored, and the server keeps
using the OLD (i.e. working) configuration.

  While there hasn't been a large demand for this feature, it's one step
along the way to a complete reload on HUP, which *has* been requested.

  Alan DeKok.