GitLab

Made MPI_Comm_split happen on-demand rather than at start-up for all the torus topologies.

Added MPI_Finalized(..) check to make sure that CTF exits gracefully (without freeing the main comm)
if a user calls MPI_Finalize() before destroying a CTF_World

tested in single node only since mpirun is crazzzzzy

1. the CTF memory tracking thinks there are leaks when there are not for reasons I cannot currently fathom, so currently -DPRODUCTION is on by default in all cfgs
2. CTF_cond_free cannot be used in PRODUCTION mode (since there is no memory tracking), which is a pain for freeing communicators in dist_tensor_internal.cxx, current solution is to leak this little bit of memory

Reads and writes which happen to the upper part or diagonal of SH/SY/AS tensors should now
be handled properly. Also corrected handling of contractions and sums over SY symmetries by
forcing unpacking (cannot use overcount factor due to that damn diagonal, though more
efficient solutions than packing are certainly possible).

Made some to CTF_Idx_tensor, could cause memleaks.