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/interpreter/interpreter.cc b/runtime/interpreter/interpreter.cc
index 0003e72..c270df7 100644
--- a/runtime/interpreter/interpreter.cc
+++ b/runtime/interpreter/interpreter.cc
@@ -23,7 +23,7 @@
 #include "interpreter_mterp_impl.h"
 #include "interpreter_switch_impl.h"
 #include "mirror/string-inl.h"
-#include "scoped_thread_state_change.h"
+#include "scoped_thread_state_change-inl.h"
 #include "ScopedLocalRef.h"
 #include "stack.h"
 #include "unstarted_runtime.h"
@@ -51,7 +51,7 @@
         ScopedThreadStateChange tsc(self, kNative);
         jresult = fn(soa.Env(), klass.get());
       }
-      result->SetL(soa.Decode<Object*>(jresult));
+      result->SetL(soa.Decode<Object>(jresult).Decode());
     } else if (shorty == "V") {
       typedef void (fntype)(JNIEnv*, jclass);
       fntype* const fn = reinterpret_cast<fntype*>(method->GetEntryPointFromJni());
@@ -93,7 +93,7 @@
         ScopedThreadStateChange tsc(self, kNative);
         jresult = fn(soa.Env(), klass.get(), arg0.get());
       }
-      result->SetL(soa.Decode<Object*>(jresult));
+      result->SetL(soa.Decode<Object>(jresult).Decode());
     } else if (shorty == "IIZ") {
       typedef jint (fntype)(JNIEnv*, jclass, jint, jboolean);
       fntype* const fn = reinterpret_cast<fntype*>(method->GetEntryPointFromJni());
@@ -191,7 +191,7 @@
         ScopedThreadStateChange tsc(self, kNative);
         jresult = fn(soa.Env(), rcvr.get());
       }
-      result->SetL(soa.Decode<Object*>(jresult));
+      result->SetL(soa.Decode<Object>(jresult).Decode());
     } else if (shorty == "V") {
       typedef void (fntype)(JNIEnv*, jobject);
       fntype* const fn = reinterpret_cast<fntype*>(method->GetEntryPointFromJni());
@@ -212,7 +212,7 @@
         ScopedThreadStateChange tsc(self, kNative);
         jresult = fn(soa.Env(), rcvr.get(), arg0.get());
       }
-      result->SetL(soa.Decode<Object*>(jresult));
+      result->SetL(soa.Decode<Object>(jresult).Decode());
       ScopedThreadStateChange tsc(self, kNative);
     } else if (shorty == "III") {
       typedef jint (fntype)(JNIEnv*, jobject, jint, jint);