shape ops work in progress

first cut at getting binary ops to work
(union/intersection/diff/xor)

git-svn-id: http://skia.googlecode.com/svn/trunk@6375 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/experimental/Intersection/EdgeDemoApp.mm b/experimental/Intersection/EdgeDemoApp.mm
index 41dea67..7c50fea 100644
--- a/experimental/Intersection/EdgeDemoApp.mm
+++ b/experimental/Intersection/EdgeDemoApp.mm
@@ -16,7 +16,7 @@
     };
 protected:
     virtual void onDraw(SkCanvas* canvas) {
-        static int step = 17907; // 17907 drawLetters first error
+        static int step = 0; // 17907 drawLetters first error
                              // drawStars triggers error at 33348
                              // drawStars error not easy to debug last time I checked
         static double seconds;