numpy/numpy — pull request #2887 by charris (2013-01-05 22:35:50+00:00)
Title: BUG: Replace unprefixed SIZEOF_* macros with prefixed versions.

The sources don't define NPY_NO_PREFIX and consequently none of the
unprefixed macros are defined. Using them can lead to some unexpected
results.

@certik, this complimemts the seberg fix and should be backported after it if you do the backport. Or you could put the two together into one PR.