attempt to fix rmtree Windows issues in test case
attempt to fix rmtree Windows issues in test case

fperez/cython,fperez/cython,c-blake/cython,fabianrost84/cython,JelleZijlstra/cython,hpfem/cython,achernet/cython,marscher/cython,madjar/cython,larsmans/cython,ABcDexter/cython,marscher/cython,achernet/cython,fabianrost84/cython,JelleZijlstra/cython,c-blake/cython,hpfem/cython,ChristopherHogan/cython,hhsprings/cython,rguillebert/CythonCTypesBackend,roxyboy/cython,hpfem/cython,mcanthony/cython,slonik-az/cython,slonik-az/cython,larsmans/cython,ChristopherHogan/cython,fperez/cython,achernet/cython,ABcDexter/cython,andreasvc/cython,acrispin/cython,slonik-az/cython,JelleZijlstra/cython,fabianrost84/cython,achernet/cython,larsmans/cython,mrGeen/cython,mcanthony/cython,hhsprings/cython,mrGeen/cython,hickford/cython,JelleZijlstra/cython,mrGeen/cython,dahebolangkuan/cython,c-blake/cython,ABcDexter/cython,hickford/cython,fabianrost84/cython,ChristopherHogan/cython,hhsprings/cython,hhsprings/cython,slonik-az/cython,madjar/cython,encukou/cython,dahebolangkuan/cython,encukou/cython,encukou/cython,mcanthony/cython,hhsprings/cython,dahebolangkuan/cython,encukou/cython,mcanthony/cython,larsmans/cython,andreasvc/cython,madjar/cython,andreasvc/cython,scoder/cython,acrispin/cython,cython/cython,roxyboy/cython,hpfem/cython,madjar/cython,andreasvc/cython,da-woods/cython,encukou/cython,acrispin/cython,madjar/cython,larsmans/cython,hpfem/cython,c-blake/cython,cython/cython,fperez/cython,mrGeen/cython,mcanthony/cython,andreasvc/cython,rguillebert/CythonCTypesBackend,hickford/cython,scoder/cython,dahebolangkuan/cython,marscher/cython,JelleZijlstra/cython,mrGeen/cython,slonik-az/cython,roxyboy/cython,da-woods/cython,achernet/cython,marscher/cython,c-blake/cython,acrispin/cython,ABcDexter/cython,marscher/cython,scoder/cython,ABcDexter/cython,hickford/cython,roxyboy/cython,rguillebert/CythonCTypesBackend,roxyboy/cython,da-woods/cython,scoder/cython,rguillebert/CythonCTypesBackend,cython/cython,da-woods/cython,dahebolangkuan/cython,fperez/cython,fabianrost84/cython,cython/cython,acrispin/cython,hickford/cython