Start work on 331.38-0ubuntu4
Integrate changes by Graham Inggs for LP: #1260974

  * debian/templates/nvidia-libopencl1-flavour.links*.in:
    - Remove libOpenCL.so symlink (LP: #1260974)
  * debian/templates/nvidia-graphics-drivers.shlibs.in,
    debian/templates/control.in:
    - Update for NVIDIA CUDA Toolkit 5.5.
Refresh files from templates
Release 331.38-0ubuntu4