[NaCL SDK] Ship sys/mount.h for newlib/pnacl.

native_client_sdk/src/libraries/nacl_io/include/sys/utsname.h

Index: native_client_sdk/src/libraries/nacl_io/include/sys/utsname.h
diff --git a/native_client_sdk/src/libraries/nacl_io/include/sys/utsname.h b/native_client_sdk/src/libraries/nacl_io/include/sys/utsname.h
index 2e3cd3daa2a9c6289ccbb3440d4d73b5d35b173f..22929159a2503e30a2c618f44a4656f661a83fc0 100644
--- a/native_client_sdk/src/libraries/nacl_io/include/sys/utsname.h
+++ b/native_client_sdk/src/libraries/nacl_io/include/sys/utsname.h
@@ -2,8 +2,8 @@
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
-#ifndef LIBRARIES_NACL_SYS_UTSNAME_H_
-#define LIBRARIES_NACL_SYS_UTSNAME_H_
+#ifndef LIBRARIES_NACL_IO_INCLUDE_SYS_UTSNAME_H_
+#define LIBRARIES_NACL_IO_INCLUDE_SYS_UTSNAME_H_
 
 #define _UTSNAME_LENGTH 65
 
@@ -15,6 +15,12 @@ struct utsname {
   char machine[_UTSNAME_LENGTH];
 };
 
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
 int uname(struct utsname *buf);
 
-#endif
+__END_DECLS
+
+#endif  /* LIBRARIES_NACL_IO_INCLUDE_SYS_UTSNAME_H_ */