* draw.c: Fix a few minor cairo rendering issues: 1) fix rendering of

	* draw.c: Fix a few minor cairo rendering issues: 1) fix rendering of
	  circular interpolation within a polygon fill. 2) Fix rendering of
	  flashed polygon apertures with holes in them.
	* tests/inputs: Add 8 new test files to test out aperture drawing, and 1
	  to test polygon fills.
	* tests/golden/*: Update all golden files in preparation for 2.0 release.
	  20 tests were failing for a variety of reasons.  Most were due to the
	  recent disabling of anti-aliasing on polygon fills, which causes very
	  small changes to the rendering of the polygon borders. The remainder
	  of the failings were due to spurious lines previously being drawn on
	  flashed apertures with holes (noticed by Stefan), which has now been
	  fixed.