fixed the negate problem better for now.  always negate in and out of camera coordinates.  flyTo works, and orbit vertical is restored.  perf better too.
	modified:   ../../web/lib/pre3d.js
	modified:   ../../web/mc/map/demoUtils.js
	modified:   ../../web/mc/map/index.html
	modified:   ../../web/mc/map/mc2data.js