Fix Ok/IsOk() mess in wxGDIObject-derived classes; also added

wxGDIObject::Create/CloneGDIRefData() and implemented them for (almost) all
ports


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50727 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/palmos/pen.h

@@ -89,9 +89,6 @@ public:
 
     bool operator!=(const wxPen& pen) const { return !(*this == pen); }
 
-    virtual bool Ok() const { return IsOk(); }
-    virtual bool IsOk() const { return (m_refData != NULL); }
-
     // Override in order to recreate the pen
     void SetColour(const wxColour& col);
     void SetColour(unsigned char r, unsigned char g, unsigned char b);