- client: change CUDA detection on Linux and Mac.
Look for libcuda.so in /usr/lib/nvidia and /usr/lib64/nvidia.
If we find it, assume that libcudart is in the library path.
svn path=/trunk/boinc/; revision=15477
don't create shmem segs in global name space.
Hopefully this will fix a bug
(on Vista, UAC off, non-protected install)
where apps fail to attach to shmem.
svn path=/trunk/boinc/; revision=15444