Consequent partial triangulation in deep pyr level

When partial triangulation is changed back to full triangulation at
level 3 we can still use the information we just want a partial tri.
This was not completely considered when in level 3 or deeper still
recursive pyramids were formed. This is can only haben in really huge
examples!
Minor parallelisation changes

removed two schedule(dynamic) where it is not usefull
some omp code cleanup