Test invocation of static methods through JNI stub

Additional unit test to avoid regressions like Change I707f8e64.

Change-Id: Ic343bf5273ca06b646f0235c88d6edbe3d20d448
diff --git a/test/MyClassNatives/MyClassNatives.java b/test/MyClassNatives/MyClassNatives.java
index d8df19b..55ec0bd 100644
--- a/test/MyClassNatives/MyClassNatives.java
+++ b/test/MyClassNatives/MyClassNatives.java
@@ -18,6 +18,7 @@
     native void throwException();
     native void foo();
     native int bar(int count);
+    static native int sbar(int count);
     native int fooI(int x);
     native int fooII(int x, int y);
     native long fooJJ(long x, long y);