JRE-624 CThreading.isAppKit() fails to detect main app thread if it was renamed

Targeted reg test to mac
diff --git a/test/jb/sun/lwawt/macosx/CThreading/IsAppKit.java b/test/jb/sun/lwawt/macosx/CThreading/IsAppKit.java
index 3029db5..d3d5ecd 100644
--- a/test/jb/sun/lwawt/macosx/CThreading/IsAppKit.java
+++ b/test/jb/sun/lwawt/macosx/CThreading/IsAppKit.java
@@ -18,6 +18,7 @@
  * @test
  * @summary regression test on JRE-624 CThreading.isAppKit() fails to detect main app thread if it was renamed
  * @compile -XDignore.symbol.file IsAppKit.java
+ * @requires os.family == "mac"
  * @run main/othervm IsAppKit 
  */