Adds support for multi-input kernels to Frameworks/Base/RS.

* Added a new JNI call to pass arrays of Allocations to the RS runtime.
* Added a new version of ForEach that takes an array of Allocations.
* Added some casts to disambiguate existing calls to forEach.

Change-Id: I46d2834c37075b2a2407fd8b010546818a4540d1

rs/java/android/renderscript/ScriptIntrinsicConvolve5x5.java

@@ -109,7 +109,7 @@ public final class ScriptIntrinsicConvolve5x5 extends ScriptIntrinsic {
      *             type.
      */
     public void forEach(Allocation aout) {
-        forEach(0, null, aout, null);
+        forEach(0, (Allocation) null, aout, null);
     }
 
     /**
@@ -130,4 +130,3 @@ public final class ScriptIntrinsicConvolve5x5 extends ScriptIntrinsic {
         return createFieldID(1, null);
     }
 }
-