little doc updates

removed GTK 1.0 Drag'n'Drop
  added (const char*) constructor to wxDataFormat
  added -I pointing to embedded /png and /jpeg dirs
  corrected frame/dialog resizing


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2244 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/dataobj.h

@@ -70,6 +70,7 @@ public:
   wxDataFormat();
   wxDataFormat( wxDataType type );
   wxDataFormat( const wxString &id );
+  wxDataFormat( const char *id );
   wxDataFormat( wxDataFormat &format );
   wxDataFormat( const GdkAtom atom );
 
@@ -77,7 +78,7 @@ public:
   wxDataType GetType() const;
   
   wxString GetId() const;
-  void SetId( const wxString &id );
+  void SetId( const char *id );
   
   GdkAtom GetAtom();