BUG: fix issue when using ``python setup.py somecommand --force``.
BUG: fix issue when using ``python setup.py somecommand --force``.

[ci skip]

bringingheavendown/numpy,Eric89GXL/numpy,tynn/numpy,charris/numpy,rgommers/numpy,jakirkham/numpy,pizzathief/numpy,MSeifert04/numpy,gfyoung/numpy,numpy/numpy,Eric89GXL/numpy,numpy/numpy,jakirkham/numpy,mattip/numpy,abalkin/numpy,shoyer/numpy,mattip/numpy,endolith/numpy,pbrod/numpy,ahaldane/numpy,pbrod/numpy,pdebuyl/numpy,simongibbons/numpy,simongibbons/numpy,endolith/numpy,b-carter/numpy,pizzathief/numpy,mhvk/numpy,WarrenWeckesser/numpy,simongibbons/numpy,pizzathief/numpy,grlee77/numpy,jakirkham/numpy,b-carter/numpy,pbrod/numpy,simongibbons/numpy,charris/numpy,seberg/numpy,mhvk/numpy,seberg/numpy,seberg/numpy,jorisvandenbossche/numpy,Eric89GXL/numpy,pizzathief/numpy,ahaldane/numpy,charris/numpy,mattip/numpy,endolith/numpy,solarjoe/numpy,rgommers/numpy,charris/numpy,pdebuyl/numpy,anntzer/numpy,abalkin/numpy,tynn/numpy,anntzer/numpy,ahaldane/numpy,tynn/numpy,madphysicist/numpy,pbrod/numpy,madphysicist/numpy,endolith/numpy,numpy/numpy,mhvk/numpy,mhvk/numpy,ahaldane/numpy,ahaldane/numpy,MSeifert04/numpy,jakirkham/numpy,shoyer/numpy,gfyoung/numpy,WarrenWeckesser/numpy,bringingheavendown/numpy,jorisvandenbossche/numpy,jakirkham/numpy,numpy/numpy,mhvk/numpy,MSeifert04/numpy,solarjoe/numpy,Eric89GXL/numpy,madphysicist/numpy,MSeifert04/numpy,b-carter/numpy,anntzer/numpy,shoyer/numpy,pbrod/numpy,abalkin/numpy,jorisvandenbossche/numpy,pdebuyl/numpy,mattip/numpy,grlee77/numpy,WarrenWeckesser/numpy,simongibbons/numpy,grlee77/numpy,madphysicist/numpy,jorisvandenbossche/numpy,shoyer/numpy,jorisvandenbossche/numpy,bringingheavendown/numpy,WarrenWeckesser/numpy,grlee77/numpy,pizzathief/numpy,anntzer/numpy,shoyer/numpy,pdebuyl/numpy,madphysicist/numpy,WarrenWeckesser/numpy,rgommers/numpy,rgommers/numpy,seberg/numpy,grlee77/numpy,gfyoung/numpy,MSeifert04/numpy,solarjoe/numpy