trial fix for PersistentNode (plain guessing)
trial fix for PersistentNode (plain guessing)

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