maintaint the mouse capture stack in all ports, not just wxUniv

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13659 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/window.h

@@ -90,8 +90,6 @@ public:
     virtual bool Reparent(wxWindowBase *newParent);
 
     virtual void WarpPointer(int x, int y);
-    virtual void CaptureMouse();
-    virtual void ReleaseMouse();
 
     virtual void Refresh( bool eraseBackground = TRUE,
                           const wxRect *rect = (const wxRect *) NULL );
@@ -438,6 +436,9 @@ protected:
                            int sizeFlags = wxSIZE_AUTO);
     virtual void DoSetClientSize(int width, int height);
 
+    virtual void DoCaptureMouse();
+    virtual void DoReleaseMouse();
+
     // move the window to the specified location and resize it: this is called
     // from both DoSetSize() and DoSetClientSize() and would usually just call
     // ::MoveWindow() except for composite controls which will want to arrange