2011-09-05 David King Update NEWS for 3.1.91 release 2011-09-05 David King Make all targets use compiler warning flags Additionally, make sure that the warnings are set to maxmium severity during a distcheck. 2011-09-05 David King Use new location for Mallard help, bug 657927 2011-09-05 Dr.T.Vasudevan updated Tamil translation 2011-09-01 Yuri Myasoedov Updated Russian translation 2011-08-31 Og B. Maciel Updated Brazilian Portuguese translation. 2011-08-29 David King Post-release version bump to 3.1.91