Relativize spec paths more when reporting
Relativize spec paths more when reporting

* `[object Object].anonymous` changed a while back to just `.anonymous`
* Windows uses `file:///path` notation, so take that into account
* Also relativize paths in parentheses

andrewleverette/atom,decaffeinate-examples/atom,xream/atom,AlexxNica/atom,CraZySacX/atom,ardeshirj/atom,brettle/atom,t9md/atom,AlexxNica/atom,ardeshirj/atom,stinsonga/atom,tjkr/atom,liuderchi/atom,kevinrenaers/atom,xream/atom,AlexxNica/atom,Arcanemagus/atom,Mokolea/atom,rlugojr/atom,kevinrenaers/atom,CraZySacX/atom,stinsonga/atom,stinsonga/atom,liuderchi/atom,kevinrenaers/atom,FIT-CSE2410-A-Bombs/atom,FIT-CSE2410-A-Bombs/atom,stinsonga/atom,xream/atom,liuderchi/atom,andrewleverette/atom,atom/atom,decaffeinate-examples/atom,Mokolea/atom,Arcanemagus/atom,decaffeinate-examples/atom,tjkr/atom,CraZySacX/atom,andrewleverette/atom,brettle/atom,t9md/atom,decaffeinate-examples/atom,brettle/atom,sotayamashita/atom,rlugojr/atom,rlugojr/atom,FIT-CSE2410-A-Bombs/atom,tjkr/atom,atom/atom,PKRoma/atom,PKRoma/atom,sotayamashita/atom,liuderchi/atom,sotayamashita/atom,ardeshirj/atom,PKRoma/atom,t9md/atom,Mokolea/atom,atom/atom,Arcanemagus/atom