* Implement iterator for NETCLASSES (NETCLASS) see class_netclass.h

* Saving modules to library (in librairi.cpp)
 
     see:
        - void PCB_EDIT_FRAME::ArchiveModulesOnBoard( const wxString& aLibName, bool aNewModulesOnly )


	- bool PCB_BASE_FRAME::Save_Module_In_Library( const wxString& aLibName,
                                             MODULE*         aModule,
                                             bool            aOverwrite,
                                             bool            aDisplayDialog )
   
   What do we do about this?, ask Dick, these functions should be transplanted
   to kicad plugin?
   

     void PCB_EDIT_FRAME::ArchiveModulesOnBoard( const wxString& aLibName, bool aNewModulesOnly )