Apply patch adding preliminary support for Ubuntu

cmake/FindCube.cmake

pvt/include/pvt/gl/opengl.hpp

pvt/include/pvt/gl/shader_program.hpp

pvt/src/gl/shader_program.cpp

pvt/src/io/perf_data_file_cube.cpp

pvt/src/io/perf_data_file_cube_cartesian_topology_loader.cpp

pvt/src/io/perf_data_file_cube_cnode_loader.cpp

pvt/src/io/perf_data_file_cube_metric_loader.cpp

pvt/src/io/perf_data_file_cube_sysnode_loader.cpp

pvt/src/io/perf_data_file_native_cnode_loader.cpp

pvt/src/io/perf_data_file_native_metric_loader.cpp

pvt/src/io/perf_data_file_native_sysnode_loader.cpp

qpvt/src/widgets/perf_data_viewer_widget.cpp