Make libnosys function stubs part of libnacl

src/untrusted/nacl/stubs/fchown.c

Index: src/untrusted/nacl/stubs/fchown.c
diff --git a/src/untrusted/nosys/fchown.c b/src/untrusted/nacl/stubs/fchown.c
similarity index 82%
rename from src/untrusted/nosys/fchown.c
rename to src/untrusted/nacl/stubs/fchown.c
index dcbc556b65cc89a841eed93cd42d0ef812864a59..a832dcd43849972ea4ea04a2bed818f16da6c370 100644
--- a/src/untrusted/nosys/fchown.c
+++ b/src/untrusted/nacl/stubs/fchown.c
@@ -17,6 +17,3 @@ int fchown(int fd, uid_t owner, gid_t group) {
   errno = ENOSYS;
   return -1;
 }
-
-#include "native_client/src/untrusted/nosys/warning.h"
-stub_warning(fchown);