ART: Move JNI files to runtime/jni/ .

Test: Rely on TreeHugger.
Change-Id: I9cae11191ef1567ae9453be498882a7767285140
diff --git a/runtime/entrypoints/entrypoint_utils-inl.h b/runtime/entrypoints/entrypoint_utils-inl.h
index 137eb4f..d4e7492 100644
--- a/runtime/entrypoints/entrypoint_utils-inl.h
+++ b/runtime/entrypoints/entrypoint_utils-inl.h
@@ -31,7 +31,7 @@
 #include "imt_conflict_table.h"
 #include "imtable-inl.h"
 #include "indirect_reference_table.h"
-#include "jni_internal.h"
+#include "jni/jni_internal.h"
 #include "mirror/array.h"
 #include "mirror/class-inl.h"
 #include "mirror/object-inl.h"