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/test/1337-gc-coverage/gc_coverage.cc b/test/1337-gc-coverage/gc_coverage.cc
index 7cf30bd..1e60bd9 100644
--- a/test/1337-gc-coverage/gc_coverage.cc
+++ b/test/1337-gc-coverage/gc_coverage.cc
@@ -17,7 +17,7 @@
 #include "gc/heap.h"
 #include "jni.h"
 #include "runtime.h"
-#include "scoped_thread_state_change.h"
+#include "scoped_thread_state_change-inl.h"
 #include "thread-inl.h"
 
 namespace art {
@@ -43,7 +43,7 @@
 
 extern "C" JNIEXPORT jlong JNICALL Java_Main_objectAddress(JNIEnv* env, jclass, jobject object) {
   ScopedObjectAccess soa(env);
-  return reinterpret_cast<jlong>(soa.Decode<mirror::Object*>(object));
+  return reinterpret_cast<jlong>(soa.Decode<mirror::Object>(object).Decode());
 }
 
 extern "C" JNIEXPORT jboolean JNICALL Java_Main_supportCollectorTransition(JNIEnv*, jclass) {