Fix MPI so we don't have two OMP loops

[karpob]

The basic first thing Need to remove outer OMP loops in pycrtm.f90 so we don't have competing things between CRTM under the hood and outside with pycrtm wrap_forward and wrap_k_matrix.

One trick may be memory management. Loading all the profiles at into the CRTM atmosphere structure could present issues for memory for cases with lots of profiles (part of why I just loaded and created one profile at a time when loading up a CRTM_Atmosphere_type). It might make sense to do it in user adjustable chunks (maybe default use a single chunk, or profiles > some large number, split into 10 chunks).

[karpob]

I have what I think will work as a basic fix, but still it's still not ideal. In https://github.com/JCSDA/pycrtm/tree/feature/bmk_restore_openmp_simple, I set the number of threads to 1 before going into crtm, letting the outer OMP loop in pycrtm handle things. I ran some of the tests repeatedly changing the number of threads etc, and I didn't see the intermittent behavior where you'd get a failure previously. Then again, it was intermittent, so that makes things tricky to test.

In https://github.com/JCSDA/pycrtm/tree/feature/bmk_restore_openmp_invasive, I tried to let the openmp under the hood in CRTM take control taking out the OpenMP stuff out of pycrtm, and just using the OMP_NUM_THREADS environment variable to control the number of threads. It runs, but when you use OMP_NUM_THREADS > 1, the tests will fail and you'll get some profiles that checkout OK, but others will be scrambled with higher brightness temperatures for some or all channels.

[karpob]

For the second option (invasive), I think there is some sort of memory leak or something like a memory leak with gomp or the combination of python/f2py/gomp, as I don't have the same problem using intel.

[karpob]

feature/bmk_restore_openmp_simple does not work. I get the error in the singularity container that we saw initially something like:

 CRTM_Geometry_IsValid(INFORMATION) : Invalid FOV index. Must be > 0.
 CRTM_Forward(FAILURE) : Input data check failed for profile #1
 CRTM_Forward(FAILURE) : 1 profiles failed
 Error CALLing CRTM_Forward.
 CRTM_Geometry_IsValid(INFORMATION) : Invalid FOV index. Must be > 0.
 CRTM_Forward(FAILURE) : Input data check failed for profile #1
 CRTM_Forward(FAILURE) : 1 profiles failed
 Error CALLing CRTM_Forward.