clean up some old buffer indexing code
clean up some old buffer indexing code

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