Fedora 16 grub2 configuration file can have lines like
set default="${saved_entry}"
and a string containing an integer is expected
Signed-off-by: Michael Young <m.a.young@xxxxxxxxxxxx>

--- a/tools/pygrub/src/GrubConf.py	2011-10-17 21:26:48.000000000 +0100
+++ b/tools/pygrub/src/GrubConf.py	2011-10-17 21:52:13.000000000 +0100
@@ -414,6 +414,8 @@
                 
             if self.commands.has_key(com):
                 if self.commands[com] is not None:
+                    if arg.strip() == "${saved_entry}":
+                        arg = "0"
                     setattr(self, self.commands[com], arg.strip())
                 else:
                     logging.info("Ignored directive %s" %(com,))