OSX: fix compatibility in the C API for py 3.
OSX: fix compatibility in the C API for py 3.

cloudbase/psutil,0-wiz-0/psutil,mindw/psutil,tomprince/psutil,mindw/psutil,packages/psutil,landryb/psutil,jamesblunt/psutil,mrjefftang/psutil,0-wiz-0/psutil,tomprince/psutil,Q-Leap-Networks/psutil,jorik041/psutil,giampaolo/psutil,tomprince/psutil,jamesblunt/psutil,landryb/psutil,tomprince/psutil,mindw/psutil,packages/psutil,qbit/psutil,jorik041/psutil,qbit/psutil,msarahan/psutil,qbit/psutil,mindw/psutil,landryb/psutil,tomprince/psutil,msarahan/psutil,landryb/psutil,mrjefftang/psutil,cloudbase/psutil,giampaolo/psutil,jorik041/psutil,landryb/psutil,msarahan/psutil,mindw/psutil,cloudbase/psutil,packages/psutil,jamesblunt/psutil,Q-Leap-Networks/psutil,mrjefftang/psutil