unhide renderscript

Change-Id: I44dd19aec0a994316da22ea8bea01b9962f54680

api update

Change-Id: I77f5365b8b7a919cd572ceb65a9ab3871b9495d0
diff --git a/graphics/java/android/renderscript/FieldPacker.java b/graphics/java/android/renderscript/FieldPacker.java
index 2a585fd..2fb3d95 100644
--- a/graphics/java/android/renderscript/FieldPacker.java
+++ b/graphics/java/android/renderscript/FieldPacker.java
@@ -18,7 +18,8 @@
 
 
 /**
- * @hide
+ * Utility class for packing arguments and structures from java objects to rs
+ * objects.
  *
  **/
 public class FieldPacker {