Radeon GLAMOR vs. Radeon EXA vs. Catalyst On X.Org Server 1.17

Radeon GLAMOR vs. Radeon EXA vs. Catalyst On X.Org Server 1.17: With Ubuntu 15.04 now shipping X.Org Server 1.17, I've run some 2D performance tests comparing the performance of this newest Ubuntu version when using the open-source Radeon graphics driver -- both with the EXA and GLAMOR acceleration methods -- compared to the new Catalyst Linux driver beta.