* draw.c: Fix some amacro rendering problems that Stefan uncovered.

	* draw.c: Fix some amacro rendering problems that Stefan uncovered.
	* draw.c: Change the thermal rendering logic to do rendering without
	  push/pop operations, so that vector output will work (previously, the
	  cairo export defaulted to an image export for thermal rendering).
	* render.c: Fix autoscaling for new amacro test (although the hack will be
	  unnecessary after we reorder the amacro rendering process to correctly
	  calculate the extents of each flashed macro aperture).