Make libnosys function stubs part of libnacl

src/untrusted/nacl/stubs/getppid.c

Index: src/untrusted/nacl/stubs/getppid.c
diff --git a/src/untrusted/nosys/getppid.c b/src/untrusted/nacl/stubs/getppid.c
similarity index 81%
rename from src/untrusted/nosys/getppid.c
rename to src/untrusted/nacl/stubs/getppid.c
index cb440288ec2d02abb03e70e9e51300b39ce7b2f7..a4160b56b4264872546132796056fbad94df8257 100644
--- a/src/untrusted/nosys/getppid.c
+++ b/src/untrusted/nacl/stubs/getppid.c
@@ -17,6 +17,3 @@ pid_t getppid(void) {
   errno = ENOSYS;
   return -1;
 }
-
-#include "native_client/src/untrusted/nosys/warning.h"
-stub_warning(getppid);