travis: Upgrade to GCC 4.9.
travis: Upgrade to GCC 4.9.

chuckatkins/legion,chuckatkins/legion,StanfordLegion/legion,noahdesu/legion,chuckatkins/legion,chuckatkins/legion,sdalton1/legion,noahdesu/legion,sdalton1/legion,StanfordLegion/legion,noahdesu/legion,sdalton1/legion,sdalton1/legion,StanfordLegion/legion,sdalton1/legion,chuckatkins/legion,chuckatkins/legion,chuckatkins/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,StanfordLegion/legion,sdalton1/legion,noahdesu/legion,noahdesu/legion,StanfordLegion/legion