ART: Move JNI files to runtime/jni/ .

Test: Rely on TreeHugger.
Change-Id: I9cae11191ef1567ae9453be498882a7767285140
diff --git a/openjdkjvmti/ti_field.cc b/openjdkjvmti/ti_field.cc
index c016966..328e2a1 100644
--- a/openjdkjvmti/ti_field.cc
+++ b/openjdkjvmti/ti_field.cc
@@ -36,7 +36,7 @@
 #include "base/enums.h"
 #include "dex/dex_file_annotations.h"
 #include "dex/modifiers.h"
-#include "jni_internal.h"
+#include "jni/jni_internal.h"
 #include "mirror/object_array-inl.h"
 #include "scoped_thread_state_change-inl.h"
 #include "thread-current-inl.h"