different processes have requested different levels of thread support. This
verification is restricted to MPI_COMM_WORLD.
In case one ore more processes have requested support for MPI_THREAD_MULTIPLE,
the cid selection algorithm will fall back to the original, thread safe
approach. Else, it uses the block-algorithm.
For dynamic communicators, we always fall back now to the original algorithm.
This has been tested for homogeneous and heterogeneous settings for
MCW. However, I could not test yet the dynamic comm scenario for technical
reasons, and that's why I don't close yet ticket 1949.
This commit was SVN r21613.
b6f292f794