fix previously untested __Pyx_UnicodeContainsUCS4() implementation for PEP 393
fix previously untested __Pyx_UnicodeContainsUCS4() implementation for PEP 393

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