No longer use deprecated aliases to functions: * Replace PyMem_MALLOC() with PyMem_Malloc() * Replace PyMem_REALLOC() with PyMem_Realloc() * Replace PyMem_FREE() with ...

CPython added PyMem_RawCalloc and PyMem_Calloc in version 3.5. I did not in include a version guard for 3.4 because PyObject_Calloc was also added in 3.5 but it's already in this file without a ...