Added tests for smooth and noSmooth for preproc.

In response to https://github.com/processing/processing4/issues/149,
adding tests to catch issues with smooth and noSmooth in the
preprocessor. Issue found by @benfry.

java/test/resources/smoothparam.pde

@@ -0,0 +1,12 @@
+void setup(){
+  size(300,300, P2D);
+  smooth(4);
+}
+
+void draw(){
+  background(0);
+  fill(255,0,0);
+  ellipse(100,100,100,100);
+  fill(0,255,0);
+  ellipse(150,150,100,100);
+}