Made wxGTK's wxEventLoop::IsRunning a little more consistent with

wxMSW's and uninstall the idle handled like wxYield does so Pending
can eventually return false.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29267 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/evtloop.h

@@ -88,7 +88,7 @@ public:
     virtual void Exit(int rc = 0);
     virtual bool Pending() const;
     virtual bool Dispatch();
-    virtual bool IsRunning() const { return m_impl != NULL; }
+    virtual bool IsRunning() const { return GetActive() == this; }
 
 protected:
     // the pointer to the port specific implementation class