Convert some OrderedSet when we only check if element are in the set or don't care about the iteration order. Only local changes.

Conflicts:
	theano/compile/profiling.py

crash fix and opt warning fix(make opt apply)

outdim -> ndim leftover and the same to is_flat

Wrap Op params for theano.tensor.nnet.corr.BaseCorrMM and sub-classes.

Fix the opt crash regression introduced by gh-5950.