Various fixes

- Do not enable CPU device together with OpenCL/CUDA when device name is not
  specified.
- Adopt output log parser fr the changed path tracing message.
- Solve issue with using same short name of command line argument for single
  device specification.
- Reshuffle include statements so it's kind of possible to use bundle python.
  Still need to work this properly, but that's for later.

benchmark/main.py

@@ -32,7 +32,7 @@ def configureArgumentParser():
     parser.add_argument('-n', '--device-name',
                         help="Device name to render on",
                         default="")
-    parser.add_argument('-s', '--device-single',
+    parser.add_argument('-e', '--device-single',
                         help="Use single device when multiple matches",
                         action='store_true',
                         default=False)