Add support for Float64 (double) to RenderScript.

Change-Id: Iad1c4adadf657a46aa38a3fad7813927e643e29d
diff --git a/graphics/java/android/renderscript/RenderScript.java b/graphics/java/android/renderscript/RenderScript.java
index 1312036..159e070 100644
--- a/graphics/java/android/renderscript/RenderScript.java
+++ b/graphics/java/android/renderscript/RenderScript.java
@@ -358,6 +358,10 @@
     synchronized void nScriptSetVarF(int id, int slot, float val) {
         rsnScriptSetVarF(mContext, id, slot, val);
     }
+    native void rsnScriptSetVarD(int con, int id, int slot, double val);
+    synchronized void nScriptSetVarD(int id, int slot, double val) {
+        rsnScriptSetVarD(mContext, id, slot, val);
+    }
     native void rsnScriptSetVarV(int con, int id, int slot, byte[] val);
     synchronized void nScriptSetVarV(int id, int slot, byte[] val) {
         rsnScriptSetVarV(mContext, id, slot, val);