Resolve PDF renderer parse issue in preproc.

Resolve moving the PDF renderer information provided in size into settings as part of preproc. Resolves #66.

java/test/resources/pdfwrite.pde

@@ -0,0 +1,14 @@
+import processing.pdf.*;
+
+void setup() {
+  size(400, 400, PDF, "filename.pdf");
+}
+
+void draw() {
+  // Draw something good here
+  line(0, 0, width/2, height);
+
+  // Exit the program
+  println("Finished.");
+  exit();
+}