ART: Move JNI files to runtime/jni/ .

Test: Rely on TreeHugger.
Change-Id: I9cae11191ef1567ae9453be498882a7767285140
diff --git a/openjdkjvmti/ti_method.cc b/openjdkjvmti/ti_method.cc
index b83310d..c0c312c 100644
--- a/openjdkjvmti/ti_method.cc
+++ b/openjdkjvmti/ti_method.cc
@@ -44,7 +44,7 @@
 #include "events-inl.h"
 #include "gc_root-inl.h"
 #include "jit/jit.h"
-#include "jni_internal.h"
+#include "jni/jni_internal.h"
 #include "mirror/class-inl.h"
 #include "mirror/class_loader.h"
 #include "mirror/object-inl.h"