Changelog for qwt5-qt4-5.2.2-26.el7.nux.x86_64.rpm :

* Sun Aug 17 2014 Fedora Release Engineering - 5.2.2-26- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_22_Mass_Rebuild
* Sun Jun 08 2014 Fedora Release Engineering - 5.2.2-25- Rebuilt for https://fedoraproject.org/wiki/Fedora_21_Mass_Rebuild