Unhide more of the RS APIs.

Change-Id: I7ec5de42680a4184d3a1380ea7c35b6ba3cf13bf
diff --git a/graphics/java/android/renderscript/Mesh.java b/graphics/java/android/renderscript/Mesh.java
index b77fe7d..f1f1237 100644
--- a/graphics/java/android/renderscript/Mesh.java
+++ b/graphics/java/android/renderscript/Mesh.java
@@ -22,7 +22,6 @@
 import android.util.Log;
 
 /**
- * @hide
  * Mesh class is a container for geometric data displayed in
  * renderscript.
  *
@@ -205,7 +204,7 @@
         /**
         * Adds a vertex data type to the builder object
         *
-        * @param r type of the vertex data allocation to be created
+        * @param t type of the vertex data allocation to be created
         *
         * @return this
         **/