Subzero: Class definition cleanup.

For consistency, put deleted ctors at the beginning of the class
definition.

If the default copy ctor or assignment operator is not deleted,
and the default implementation is used, leave it commented out to
indicate it is intentional.

Also, fixed one C++11 related TODO.

BUG= none
R=jvoung@chromium.org, kschimpf@google.com

Review URL: https://codereview.chromium.org/656123003
diff --git a/src/IceConverter.h b/src/IceConverter.h
index d26c34c..623a4f0 100644
--- a/src/IceConverter.h
+++ b/src/IceConverter.h
@@ -25,6 +25,9 @@
 namespace Ice {
 
 class Converter : public Translator {
+  Converter(const Converter &) = delete;
+  Converter &operator=(const Converter &) = delete;
+
 public:
   Converter(llvm::Module *Mod, GlobalContext *Ctx, const Ice::ClFlags &Flags)
       : Translator(Ctx, Flags), Mod(Mod) {}
@@ -64,9 +67,6 @@
 
   // Installs global declarations into GlobalDeclarationMap.
   void installGlobalDeclarations(llvm::Module *Mod);
-
-  Converter(const Converter &) = delete;
-  Converter &operator=(const Converter &) = delete;
 };
 
 } // end of namespace ICE.