Use Python class staticmethod syntax to access C++ static member functions,
such as Klass.memberfunction, instead of Klass_memberfunction.
Examples and test-suite changes in preparation for issue #2137.
Define the nb_divide/nb_inplace_divide slots in the interface and use it them as nb_divide/nb_inplace_divide for Python 2.x and as nb_true_divide/nb_inplace_trus_divide for Python 3.x.
The Python 3.x nb_floor_divide/nb_inplace_floor_divide slots (operator // in Python) are not populated by the interface.
This suite fails on Python 3 (with and without -builtin) due to the following issues:
- Operator / is mapped to the div slot which is now truediv in Python3 (see PR #136 for a WIP fix).
- Operators +=, -=, *= and probably others assign the method return type (void) to the object they are applied on. A workaround is to return *this from the affected operators.
William S Fulton