Clean up ScopedThreadStateChange to use ObjPtr

Also fixed inclusion of -inl.h files in .h files by adding
scoped_object_access-inl.h and scoped_fast_natvie_object_access-inl.h

Changed AddLocalReference / Decode to use ObjPtr.

Changed libartbenchmark to be debug to avoid linkage errors.

Bug: 31113334

Test: test-art-host

Change-Id: I4d2e160483a29d21e1e0e440585ed328b9811483
diff --git a/runtime/arch/stub_test.cc b/runtime/arch/stub_test.cc
index 3424e3c..5e39f42 100644
--- a/runtime/arch/stub_test.cc
+++ b/runtime/arch/stub_test.cc
@@ -26,7 +26,7 @@
 #include "linear_alloc.h"
 #include "mirror/class-inl.h"
 #include "mirror/string-inl.h"
-#include "scoped_thread_state_change.h"
+#include "scoped_thread_state_change-inl.h"
 
 namespace art {
 
@@ -1796,7 +1796,7 @@
 
   ScopedObjectAccess soa(self);
   StackHandleScope<3> hs(self);
-  Handle<mirror::Object> obj(hs.NewHandle(soa.Decode<mirror::Object*>(o)));
+  Handle<mirror::Object> obj(hs.NewHandle(soa.Decode<mirror::Object>(o)));
   Handle<mirror::Class> c(hs.NewHandle(obj->GetClass()));
   // Need a method as a referrer
   ArtMethod* m = c->GetDirectMethod(0, kRuntimePointerSize);
@@ -1995,11 +1995,11 @@
 
   jobject jarray_list = env->NewObject(arraylist_jclass, arraylist_constructor);
   ASSERT_NE(nullptr, jarray_list);
-  Handle<mirror::Object> array_list(hs.NewHandle(soa.Decode<mirror::Object*>(jarray_list)));
+  Handle<mirror::Object> array_list(hs.NewHandle(soa.Decode<mirror::Object>(jarray_list)));
 
   jobject jobj = env->NewObject(obj_jclass, obj_constructor);
   ASSERT_NE(nullptr, jobj);
-  Handle<mirror::Object> obj(hs.NewHandle(soa.Decode<mirror::Object*>(jobj)));
+  Handle<mirror::Object> obj(hs.NewHandle(soa.Decode<mirror::Object>(jobj)));
 
   // Invocation tests.