params: Deprecate old-style constructors; update most SimObject constructors.

SimObjects not yet updated:
- Process and subclasses
- BaseCPU and subclasses

The SimObject(const std::string &name) constructor was removed.  Subclasses
that still rely on that behavior must call the parent initializer as
  : SimObject(makeParams(name))

--HG--
extra : convert_revision : d6faddde76e7c3361ebdbd0a7b372a40941c12ed
diff --git a/src/sim/sim_object.hh b/src/sim/sim_object.hh
index 2e99a85..b70f1d5 100644
--- a/src/sim/sim_object.hh
+++ b/src/sim/sim_object.hh
@@ -84,9 +84,14 @@
     typedef SimObjectParams Params;
     const Params *params() const { return _params; }
     SimObject(const Params *_params);
-    SimObject(const std::string &_name);
     virtual ~SimObject() {}
 
+  protected:
+    // static: support for old-style constructors (call manually)
+    static Params *makeParams(const std::string &name);
+
+  public:
+
     virtual const std::string name() const { return params()->name; }
 
     // initialization pass of all objects.