improve Python compatibility during stdlib compilation
improve Python compatibility during stdlib compilation

--HG--
extra : rebase_source : 3925751f19150188e9c65f87aca4039a7d551b7a

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