* include/ws2spi.h (system_header): Add pragma.
* include/rasdlg.h (system_header): Add pragma.
* include/rasdlg.h (_RASDLG_H): Define.
Define instead of _RASDLG_H_, this is the w32api standard.
* include/mlang.h (_MLANG_H): Define.
Define instead of _MLANG_H_, this is the w32api standard.
* include/setupapi.h (_SETUPAPI_H): Define.
Define instead of _SETUPAPI_H_, this is the w32api standard.
