Log Message:
Update squid packate to 2.5.9nb2.

Add these official patches:

* 2005-03-30 22:51 (Cosmetic)
	external acls requiring authentication does not request new
	credentials on access denials like proxy_auth does.
* 2005-03-29 09:52 (Cosmetic)
	New cachemgr pending_objects and client_objects actions
* 2005-03-26 23:53 (Minor) rename() related cleanup
* 2005-03-30 22:51 (Medium)
	Fails to process requests for files larger than 2GB in size
* 2005-03-19 23:57 (Cosmetic)
	aufs warning about open event filedescriptors on shutdown
* 2005-03-19 01:35 (Minor) --disable-hostname-checks not working
* 2005-03-19 01:11 (Cosmetic) LDAP helpers fails to compile with SUN LDAP SDK
* 2005-03-21 20:44 (Minor)
	CONNECT requests truncated if client side disconnects first
	assertion failed: comm.c:430: "ntohs(address->sin_port) != 0"
* 2005-03-19 00:25 (Minor)
	Basic authentication fails with very long logins or password
* 2005-03-29 08:45 (Minor) Several minor aufs issues
* 2005-03-09 15:46 (Cosmetic)
	Extend relaxed_header_parser to work around "excess data from"
	errors from many major web servers.
* 2005-03-09 15:46 (Cosmetic)
	Duplicate content-length headers logged as conflicting with
	relaxed_header_parser off
* 2005-03-09 15:46 (Cosmetic)
	Defer digest fetch if the peer is not allowed to be used
* 2005-03-10 23:38 (Minor) Incorrect use of ctype functions
* 2005-03-15 04:27 (Minor) compile warnings due to pid_t not being an int
* 2005-03-09 15:46 (Minor)
	bzero is a non-standard function not available on all platforms
* 2005-03-09 15:46 (Cosmetic)
	Check several squid.conf directives for int overflows
* 2005-03-09 15:46 (Cosmetic) Clarify delay_access function
* 2005-03-09 15:46 (Minor)
	reload_into_ims fails to revalidate negatively cached entries
* 2005-03-09 15:46 (Minor) Handle odd date formats