remove old cached_* functions from __all__ and populate __all__ for linux platform only
remove old cached_* functions from __all__ and populate __all__ for linux platform only

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