Make libnosys function stubs part of libnacl

src/untrusted/nacl/stubs/setegid.c

Index: src/untrusted/nacl/stubs/setegid.c
diff --git a/src/untrusted/nosys/setegid.c b/src/untrusted/nacl/stubs/setegid.c
similarity index 82%
rename from src/untrusted/nosys/setegid.c
rename to src/untrusted/nacl/stubs/setegid.c
index f74fb3072abb8cdc259c0bed4bdc4d6f00a1c454..5bba2aab076e916f799ac8a667a7c506e25c03d0 100644
--- a/src/untrusted/nosys/setegid.c
+++ b/src/untrusted/nacl/stubs/setegid.c
@@ -17,6 +17,3 @@ int setegid(uid_t euid) {
   errno = ENOSYS;
   return -1;
 }
-
-#include "native_client/src/untrusted/nosys/warning.h"
-stub_warning(setegid);