Cudo samples won't compile with gcc-5

Body:

I followed tshiex instructions and installed Blender from his repo.

When following the instructions to install and test cudo, I ran into the
problem that cudo samples cannot compile with versions of gcc/g++ after 4.9
and my system runs gcc-5

I solved the problem by:
- installing gcc and g++ 4.9 from the Ubuntu repo,
- creating the following sym links within the cudo directories:
$ sudo ln -s /usr/bin/gcc-4.9 /usr/local/cuda/bin/gcc
$ sudo ln -s /usr/bin/g++-4.9 /usr/local/cuda/bin/g++

 affects Blender - Ubuntu Vivid