coverage: try harder to find the main C source file when the tracer first hits an include file in it
coverage: try harder to find the main C source file when the tracer first hits an include file in it

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