Make libnosys function stubs part of libnacl

src/untrusted/nacl/stubs/fork.c

Index: src/untrusted/nacl/stubs/fork.c
diff --git a/src/untrusted/nosys/fork.c b/src/untrusted/nacl/stubs/fork.c
similarity index 82%
rename from src/untrusted/nosys/fork.c
rename to src/untrusted/nacl/stubs/fork.c
index 235bfa8bfd6842c5670acc7389907c13e6a00832..7a0ecf52b9344a405e31f347ef7e0d7acec88a3c 100644
--- a/src/untrusted/nosys/fork.c
+++ b/src/untrusted/nacl/stubs/fork.c
@@ -17,6 +17,3 @@ pid_t fork(void) {
   errno = ENOSYS;
   return -1;
 }
-
-#include "native_client/src/untrusted/nosys/warning.h"
-stub_warning(fork);