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/foundation/stats.py

@@ -7,7 +7,7 @@ class Stats:
     def __init__(self):
         # Pepare some regex for parsing
         self.re_path_tracing = re.compile(
-            ".*Path Tracing Tile ([0-9]+)/([0-9]+)" +
+            ".*Rendered ([0-9]+)/([0-9]+) Tiles" +
             "(, Sample ([0-9]+)\/([0-9]+))?$")
         self.re_total_render_time = re.compile(
             ".*Total render time: ([0-9]+(\.[0-9]+)?)")