fix string constant declarations for non CPython-version-specific strings
fix string constant declarations for non CPython-version-specific strings

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