bind plugin: Fix various bugs.

bind plugin: Fix various bugs.

On Mon, 16 February 2009 Florian Forster wrote:
> The new plugins are:
>
>   * BIND:      Name-server and zone statistics

A few bugs are hidden there, attached is a patch that fixes most
of those I've discovered untils now.

- Url parameter never considered
- missing type definition for dns_reject
- MemoryStats is linked to the wrong variable
  (TODO: memory stats seem not to work, probably dispatch_counter()
   for gauge value ...)
- SOAOutv6 should be translated to SOA-IPv6 instead of SOA-IPv4
  in order to be saved correctly and not cause timestamp collisions

Bruno