rename type imports of 'unicode' and 'str' type according to Py version
rename type imports of 'unicode' and 'str' type according to Py version

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