Make libnosys function stubs part of libnacl

src/untrusted/nacl/stubs/getpwent.c

Index: src/untrusted/nacl/stubs/getpwent.c
diff --git a/src/untrusted/nosys/getpwent.c b/src/untrusted/nacl/stubs/getpwent.c
similarity index 82%
rename from src/untrusted/nosys/getpwent.c
rename to src/untrusted/nacl/stubs/getpwent.c
index 07e9a2da30fde4b6b0915bf4a2e9a1b245cf8af2..d88a684b40649aab3f6cb82ff5b847b46e7adfab 100644
--- a/src/untrusted/nosys/getpwent.c
+++ b/src/untrusted/nacl/stubs/getpwent.c
@@ -17,6 +17,3 @@ struct passwd *getpwent(void) {
   errno = ENOSYS;
   return NULL;
 }
-
-#include "native_client/src/untrusted/nosys/warning.h"
-stub_warning(getpwent);