Log Message:
- Enable --enable-arp-acl configure option on FreeBSD, Linux and SunOS.
- Add 9 official patches.

Bump package revision, squid-2.5.6nb3.

* 2004-09-30 09:28 (Minor) CARP ignores cache_peer_domain/cache_peer_access
* 2004-09-27 18:23 (Minor) balance_on_multiple_ip squid.conf directive
* 2004-09-27 18:10 (Minor) Race window and poor responsiveness to aborted
  CONNECT requests
* 2004-09-25 21:42 (Cosmetic) Support the --program-prefix and other program
  name transforms
* 2004-09-25 21:08 (Cosmetic) Document the caseinsensitive basic auth option
* 2004-09-25 20:57 (Cosmetic) ncsa_auth is sensitive on line ending format
* 2004-09-25 12:00 (Medium) Add support for arbitrary headers acess controls
* 2004-09-26 21:22 (Minor) Limit internal send/receive buffers
* 2004-09-25 09:55 (Cosmetic) arp acls is supported on FreeBSD these days..