enable forked test runs for pyregr test suite
enable forked test runs for pyregr test suite

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