Fix missing or broken interface items for Phoenix

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@69196 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/app.h

@@ -221,6 +221,8 @@ public:
     //@}
 
 
+    bool Yield(bool onlyIfNeeded = false);
+
     /**
         Allows external code to modify global ::wxTheApp, but you should really
         know what you're doing if you call it.
@@ -250,7 +252,6 @@ public:
     */
     static bool IsMainLoopRunning();
 
-
     /**
         @name Callbacks for application-wide "events"
     */