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

This patch modifies Frameworks/RS in the following ways:
* Adjusted the data-layout of the C/C++ version of RsForEachStubParamStruct to
  accommodate a pointer to an array of input allocations and a pointer to an
  array of stride sizes for each of these allocatoins.
* Adds a new code path for Java code to pass multiple allocations to a RS
  kernel.
* Packs base pointers and step values for multi-input kernels into the new
  RsForEachStubParamStruct members.

Change-Id: I46d2834c37075b2a2407fd8b010546818a4540d1
diff --git a/rsScriptC.h b/rsScriptC.h
index d26cde0..d3d9d51 100644
--- a/rsScriptC.h
+++ b/rsScriptC.h
@@ -50,6 +50,15 @@
                             size_t usrBytes,
                             const RsScriptCall *sc = NULL);
 
+    virtual void runForEach(Context *rsc,
+                            uint32_t slot,
+                            const Allocation ** ains,
+                            size_t inLen,
+                            Allocation * aout,
+                            const void * usr,
+                            size_t usrBytes,
+                            const RsScriptCall *sc = NULL);
+
     virtual void serialize(Context *rsc, OStream *stream) const {    }
     virtual RsA3DClassID getClassId() const { return RS_A3D_CLASS_ID_SCRIPT_C; }
     static Type *createFromStream(Context *rsc, IStream *stream) { return NULL; }