cleanup, support UnaryPlusNode in constant folding
cleanup, support UnaryPlusNode in constant folding

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