* bug fix: force todense of sparse matrices in check_equal, as two sparse
matrices are never equal in scipy 0.6
* numeric_grad no longer cares that all parameters are of the same type
* new Reshape optimization (@todo: reshape-flatten optimization)

reverted my change to module.py as they cause some trouble. I will look at them after the hollydays.

better test and removed the test test_no_shared_members as it have no reason to exist. The shared/non-shared ness of a results is tested in other test.

added partial test for this.

updated the test

-updated test to reflect this.

good implementation of test_method_in_list_or_dict. This found a bug that we don't support [[Method()]] or for tuple... We suppport only 1 deep of container.

added implementation of test_shared_members. This found a bug that list of list, list of tuple, tuple of list of member don't work

- revised destroyhandler to be more efficient, in view of how frequently
  env.destroyers() was being called.
- fixed errors in tensor.flatten(), but also changed semantics of the optional
  shape parameter.
- added testcases of the previous merge optimizer fix.

-started writing missing test.

was being copied, but not the value itself

bugfix. If you used Value, TensorValue, tensor.value(), the value was not considered as an input. So this was making the inplace_opt optimizer optimize it while it should not be doing it.