add some more runtime tests for closures, nested functions and classes
add some more runtime tests for closures, nested functions and classes

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