fix up GNU_SOURCE stuff
fix up GNU_SOURCE stuff

ppliu1979/libinjection,fengjian/libinjection,fengjian/libinjection,dijkstracula/libinjection,ppliu1979/libinjection,ppliu1979/libinjection,ppliu1979/libinjection,fengjian/libinjection,dijkstracula/libinjection,dijkstracula/libinjection,dijkstracula/libinjection,ppliu1979/libinjection,fengjian/libinjection,fengjian/libinjection,dijkstracula/libinjection,fengjian/libinjection,fengjian/libinjection,dijkstracula/libinjection,ppliu1979/libinjection