Update upstream project, ArrayFire, submodule to latest commit

9prady9 · 9prady9 · commit 3aaa5b2dea8a · 2016-07-29T12:00:00.000+05:30
diff --git a/arrayfire b/arrayfire
@@ -1 +1 @@
-Subproject commit a4fa33844fbd19286f57f12e06268d8ce855bbea
+Subproject commit 71da292bc42e29639443b6873a5de364fa7a45b9
