NaCl: Provide non-default values for uname.

posix/uname-values.h

@@ -0,0 +1,28 @@
+/* Constant values for the uname function to return.  Generic version.
+   Copyright (C) 2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* This file exists so that it can be replaced by sysdeps variants.
+   It must define these macros with string values:
+        UNAME_SYSNAME
+        UNAME_RELEASE
+        UNAME_VERSION
+        UNAME_MACHINE
+   If there is no sysdeps file, this file will just proxy to the file
+   created by posix/Makefile.  */
+
+#include <config-name.h>