working on pdf integration and record() stuff.. tweaking up api

core/PGraphics.java

@@ -3537,4 +3537,11 @@ public class PGraphics extends PImage implements PConstants {
     throw new RuntimeException("recordRaw() not supported " +
                                "by this renderer.");
   }
+
+  public PGraphics recordRaw(String renderer, String filename) {
+    PGraphics rec =
+      PApplet.createGraphics(width, height, renderer, null, filename);
+    recordRaw(rec);
+    return rec;
+  }
 }