Add an option for cleaning up only succeeding tests.
Add an option for cleaning up only succeeding tests.

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