Log Message:
Update squid package to 2.6.19 (2.6.STABLE19).

Changes to squid-2.6.STABLE19 (19 Mar 2008)

	- Fix tcp_outgoing_address example config to match its description
	- Bug #2198: assertion failed sc != NULL when using peer monitor
	  function
	- Fix missing default disk store type into QUICKSTART example.
	- Bugzilla #761 : Handle recursive completion operations in diskd.
	- documentation bugfix for tcp_outgoing_tos directive
	- Sort cache list in wccpv2 to ensure a consistent hash allocation
	  across all services
	- Updated Ukrainan error pages
	- Compile error in squid_kerb_auth under Mac OS X 10.5.2
	- squid_radius_auth failed ro process more than 256 requests
	- Clarified description of 'cache_vary' directive
	- Make range_offset_limit 0 disable local range processing as
	  documented, even if the first range starts at 0