Log Message:
Update squid to 2.6.11 (squid-2.6.STABLE11).

Changes to squid-2.6.STABLE11 (Mar 17 2007)

	- Bug #1915: assertion failed: client_side.c:4055: "buf != NULL ||
	  !conn->body.request"
	- Handle garbage helper responses better in concurrent protocol format
	- Fix kqueue when overflowing the changes queue
	- Make sure the child worker process commits suicide if it could
	  not start up
	- Don't log short responses at debug level 1
	- Fix bswap16 & bwsap32 error on NetBSD
	- Fix collapsed_forwarding for non-GET requests