Use a static string when showing table headers rather then
a nonsense parametric one with fixed arguments.

It is easier to grep and it does not need to be recomputed
at runtime each time.
Reported-by: NJoe Perches <joe@perches.com>
Signed-off-by: NAntonio Quartulli <a@unstable.cc>
[sven@narfation.org: fix conflicts with current version]
Signed-off-by: NSven Eckelmann <sven@narfation.org>
Signed-off-by: NMarek Lindner <mareklindner@neomailbox.ch>