[NaCl SDK]: use standard __BEGIN_DECLS macros in sys/select.h

native_client_sdk/src/libraries/third_party/newlib-extras/sys/select.h

Index: native_client_sdk/src/libraries/third_party/newlib-extras/sys/select.h
diff --git a/native_client_sdk/src/libraries/third_party/newlib-extras/sys/select.h b/native_client_sdk/src/libraries/third_party/newlib-extras/sys/select.h
index f0595fdad0360fb1ab30af7e2bcaf0ba377c7605..9aa755db4acd2964244f22e66153880f7d9d99a4 100644
--- a/native_client_sdk/src/libraries/third_party/newlib-extras/sys/select.h
+++ b/native_client_sdk/src/libraries/third_party/newlib-extras/sys/select.h
@@ -6,15 +6,13 @@
 #include <sys/types.h>
 #include <time.h>
 
-#include "sdk_util/macros.h"
-
-EXTERN_C_BEGIN
+__BEGIN_DECLS
 
 int select (int __nfds, fd_set *__restrict __readfds,
             fd_set *__restrict __writefds,
             fd_set *__restrict __exceptfds,
             struct timeval *__restrict __timeout) __THROW;
 
-EXTERN_C_END
+__END_DECLS
 
 #endif /* sys/select.h */