tl;dr

Fix the next doctest error:

___________________________________________________________________ [doctest] pandas.io.stata.read_stata ____________________________________________________________________
2044 Categorical variables read through an iterator may not have the same
2045 categories and dtype. This occurs when  a variable stored in a DTA
2046 file is associated to an 

Right now the macros for banded alignment like CUDAPOA_BANDED_MATRIX_RIGHT_PADDING are not shared between the kernel code and other sources that determine sizes for bands (such as in batch.cu). For now they're hard coded to specific numbers, but this is error prone. This needs to be fixed to the macros are shared between files.