Fix Fedora FTBFS with -Werror=format-security enabled.

During the Fedora 21 development cycle, all packages have been rebuilt with the compile option:
-Werror=format-security, see https://fedoraproject.org/wiki/Format-Security-FAQ
The purpose is to cause compilation failures when certain detectable string format constructions have been used. The Fedora bug is:
https://bugzilla.redhat.com/show_bug.cgi?id=1037361
and a patch against v1.4.9 is attached:
https://bugzilla.redhat.com/attachment.cgi?id=908703&action=diff

This patch is slightly modified to suit the removal of the COPYRIGHT string.