Initial HTTP cookie support imported from development git repo,

	Initial HTTP cookie support imported from development git repo,
	including patches from Xan Lopez.

	TODO: make sure the logic in soup_cookie_jar_get_cookies() is
	right. Add a test program to tests/.

	* libsoup/soup-cookie.c: Code for parsing and generating HTTP
	cookies.

	* libsoup/soup-cookie-jar.c: Code for managing SoupCookies and
	integrating cookie management with a SoupSession.

	* libsoup/soup-date.c (soup_date_is_past): New, checks if a
	SoupDate refers to a time in the past

	* libsoup/soup-dns.c (soup_dns_is_ip_address): New, checks if a
	string is a valid IP address

	* libsoup/soup-headers.c (soup_header_parse_semi_param_list): New,
	like soup_header_parse_param_list, but for semicolon-delimited
	data.

svn path=/trunk/; revision=1135