Launch options & multi inputs for single-source RS

Bug: 23535985

Also renamed rsParallelFor to rsForEach, and deprecated previous
rsForEach.

Change-Id: Ibc22bd5e9585a4471b15920ef60fe1fe2312de49
diff --git a/rsRuntime.h b/rsRuntime.h
index bcaebcd..9bc05b3 100644
--- a/rsRuntime.h
+++ b/rsRuntime.h
@@ -156,7 +156,8 @@
 
 void rsrForEach(Context *, Script *target,
                 uint32_t slot,
-                Allocation *in,
+                uint32_t numInputs,
+                Allocation **in,
                 Allocation *out,
                 const void *usr,
                 uint32_t usrBytes,