Added pair compare's for packet src/dst IP, src/dst port,

	Added pair compare's for packet src/dst IP, src/dst port,
	server identity, and a number of other useful things.

	Cleaned up the pair compare stuff a little, so that the callbacks
	are separate from the simple comparisons, and the callbacks can
	create VP's, and call "compare VP" function.

	This means that you can now do regex matches on almost anything,
	too...