implementation of SoupCookieJar that persists to a text file in the old

implementation of SoupCookieJar that persists to a text file in the old

	* libsoup/soup-cookie-jar-text.c: implementation of SoupCookieJar
	that persists to a text file in the old Mozilla cookies.txt
	format.

	* libsoup/soup-cookie-jar-sqlite.c: implementation of
	SoupCookieJar that persists to an sqlite database in the new
	Mozilla cookies.sqlite format. (Part of libsoup-gnome.)

	* libsoup/soup-cookie-jar.c: add various functionality needed by
	the two new subclasses. Does not break API/ABI compat with 2.24.

	* libsoup/soup-cookie.c (soup_cookie_get_type): register
	SoupCookie as a boxed type.
	(domain_matches): fix a bug here that meant "foo.com" couldn't set
	a cookie for domain=.foo.com
	(soup_cookie_applies_to_uri): fix path checking

	* configure.in: if building --with-gnome, require sqlite3

svn path=/trunk/; revision=1200