Tech executive Meg Whitman has sold her 1,500-acre Northern California ranch for a whopping $18.5 million — in yet another potential example of the rich fleeing the state’s proposed “billionaire tax.” The former CEO of Hewlett-Packard and eBay listed the Spring Creek Ranch near Redding in April. The ranch was just purchased by California investor and conservationist, Kelly J. Barlow.  The ranch is said to be a prime location for trout fishing. Barlow, an enthusiastic fly fisherman, also serves