ART: Enable Clang's -Wdeprecated

Replace throw() with noexcept.

Add default copy constructors and copy assignment constructors for
cases with destructors, as the implicit definition is deprecated.

Change-Id: Ice306a3f510b072b00bec4d4360f7c8055135c9d
diff --git a/compiler/utils/array_ref.h b/compiler/utils/array_ref.h
index b1b0ee5..ff5a77c 100644
--- a/compiler/utils/array_ref.h
+++ b/compiler/utils/array_ref.h
@@ -89,6 +89,8 @@
       : array_(v.data()), size_(v.size()) {
   }
 
+  ArrayRef(const ArrayRef&) = default;
+
   // Assignment operators.
 
   ArrayRef& operator=(const ArrayRef& other) {