make encoding detection code a bit faster if the first two source file lines are longer than 250 bytes
make encoding detection code a bit faster if the first two source file lines are longer than 250 bytes

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