auto merge of #1114 : metajack/servo/reftest-sha-fix, r=larsbergstrom
auto merge of #1114 : metajack/servo/reftest-sha-fix, r=larsbergstrom

`dirname()` now returns a `&'a [u8]` instead of a `Path`, which was serialized
to `[ 1 2 3 4 5 ]`.

nerith/servo,upsuper/servo,peterjoel/servo,nnethercote/servo,dvberkel/servo,bjwbell/servo,bjwbell/servo,wpgallih/servo,cbrewster/servo,luniv/servo,shrenikgala/servo,seanmonstar/servo,boghison/servo,mattnenterprise/servo,hyowon/servo,upsuper/servo,saratang/servo,saratang/servo,michaelwu/servo,nrc/servo,mbrubeck/servo,boghison/servo,SimonSapin/servo,canaltinova/servo,aidanhs/servo,zhangjunlei26/servo,tschneidereit/servo,dvberkel/servo,rentongzhang/servo,runarberg/servo,upsuper/servo,SimonSapin/servo,mrobinson/servo,mukilan/servo,pyecs/servo,aidanhs/servo,tschneidereit/servo,paulrouget/servo,luniv/servo,brendandahl/servo,AnthonyBroadCrawford/servo,Shraddha512/servo,boghison/servo,KiChjang/servo,peterjoel/servo,eddyb/servo,thiagopnts/servo,codemac/servo,KiChjang/servo,nrc/servo,codemac/servo,evilpie/servo,mbrubeck/servo,DominoTree/servo,cbrewster/servo,pyecs/servo,hyowon/servo,jdramani/servo,ruud-v-a/servo,canaltinova/servo,bjwbell/servo,notriddle/servo,michaelwu/servo,samfoo/servo,metajack/servo,indykish/servo,echochamber/servo,RenaudParis/servo,nerith/servo,mrobinson/servo,anthgur/servo,snf/servo,wartman4404/servo,deokjinkim/servo,s142857/servo,larsbergstrom/servo,paulrouget/servo,Aalhad/CanvasRenderingContext2DMozilla,samfoo/servo,mdibaiee/servo,ruud-v-a/servo,snf/servo,A-deLuna/servo,runarberg/servo,anthgur/servo,echochamber/servo,aweinstock314/servo,sadmansk/servo,jimberlage/servo,codemac/servo,larsbergstrom/servo,zhangjunlei26/servo,Shraddha512/servo,samfoo/servo,SimonSapin/servo,mt2d2/servo,sadmansk/servo,anthgur/servo,pgonda/servo,nrc/servo,dati91/servo,upsuper/servo,DominoTree/servo,szeged/servo,nnethercote/servo,dvberkel/servo,zhangjunlei26/servo,peterjoel/servo,michaelwu/servo,ryancanhelpyou/servo,bfrohs/servo,szeged/servo,CJ8664/servo,sadmansk/servo,pyecs/servo,pgonda/servo,indykish/servo,karlito40/servo,paulrouget/servo,mbrubeck/servo,srbhklkrn/SERVOENGINE,shrenikgala/servo,snf/servo,eddyb/servo,rentongzhang/servo,splav/servo,SimonSapin/servo,michaelwu/servo,pyfisch/servo,bjwbell/servo,GyrosOfWar/servo,boghison/servo,paulrouget/servo,evilpie/servo,caldwell/servo,WriterOfAlicrow/servo,GyrosOfWar/servo,g-k/servo,avadacatavra/servo,indykish/servo,emilio/servo,rixrix/servo,vks/servo,akosel/servo,aidanhs/servo,hyowon/servo,A-deLuna/servo,dsandeephegde/servo,evilpie/servo,mt2d2/servo,GyrosOfWar/servo,nick-thompson/servo,mdibaiee/servo,vks/servo,vks/servo,dagnir/servo,jimberlage/servo,nick-thompson/servo,dmarcos/servo,nerith/servo,saneyuki/servo,jdramani/servo,brendandahl/servo,meh/servo,WriterOfAlicrow/servo,mukilan/servo,dati91/servo,paulrouget/servo,thiagopnts/servo,bfrohs/servo,splav/servo,jimberlage/servo,GreenRecycleBin/servo,dhananjay92/servo,karlito40/servo,thiagopnts/servo,avadacatavra/servo,splav/servo,dhananjay92/servo,larsbergstrom/servo,j3parker/servo,thiagopnts/servo,sadmansk/servo,j3parker/servo,tafia/servo,ruud-v-a/servo,canaltinova/servo,g-k/servo,rentongzhang/servo,indykish/servo,froydnj/servo,bjwbell/servo,saneyuki/servo,nrc/servo,pgonda/servo,AnthonyBroadCrawford/servo,codemac/servo,hyowon/servo,hyowon/servo,AnthonyBroadCrawford/servo,A-deLuna/servo,mrobinson/servo,jlegendary/servo,akosel/servo,pyecs/servo,DominoTree/servo,GyrosOfWar/servo,mattnenterprise/servo,jdramani/servo,fiji-flo/servo,meh/servo,mrobinson/servo,CJ8664/servo,rixrix/servo,Shraddha512/servo,jgraham/servo,zentner-kyle/servo,bjwbell/servo,saneyuki/servo,rixrix/servo,codemac/servo,emilio/servo,froydnj/servo,owaspjocur/servo,rixrix/servo,nnethercote/servo,A-deLuna/servo,DominoTree/servo,saratang/servo,luniv/servo,mukilan/servo,ruud-v-a/servo,mt2d2/servo,jimberlage/servo,Adenilson/prototype-viewing-distance,SimonSapin/servo,aweinstock314/servo,echochamber/servo,boghison/servo,zhangjunlei26/servo,larsbergstrom/servo,eddyb/servo,steveklabnik/servo,zhangjunlei26/servo,RenaudParis/servo,Adenilson/prototype-viewing-distance,tafia/servo,indykish/servo,tschneidereit/servo,aidanhs/servo,saratang/servo,akosel/servo,tschneidereit/servo,deokjinkim/servo,eddyb/servo,metajack/servo,KiChjang/servo,walac/servo,dhananjay92/servo,g-k/servo,s142857/servo,sadmansk/servo,runarberg/servo,splav/servo,tafia/servo,jgraham/servo,dvberkel/servo,rixrix/servo,mt2d2/servo,nerith/servo,wartman4404/servo,peterjoel/servo,AnthonyBroadCrawford/servo,splav/servo,metajack/servo,meh/servo,rixrix/servo,dhananjay92/servo,jlegendary/servo,owaspjocur/servo,notriddle/servo,Adenilson/prototype-viewing-distance,aweinstock314/servo,akosel/servo,RenaudParis/servo,aweinstock314/servo,KiChjang/servo,dati91/servo,wpgallih/servo,jimberlage/servo,luniv/servo,GreenRecycleBin/servo,rixrix/servo,eddyb/servo,youprofit/servo,RenaudParis/servo,dmarcos/servo,shrenikgala/servo,nerith/servo,szeged/servo,dmarcos/servo,tafia/servo,evilpie/servo,splav/servo,zhangjunlei26/servo,walac/servo,cbrewster/servo,steveklabnik/servo,chotchki/servo,saneyuki/servo,owaspjocur/servo,wpgallih/servo,szeged/servo,rnestler/servo,ryancanhelpyou/servo,jdramani/servo,rixrix/servo,emilio/servo,nnethercote/servo,caldwell/servo,Aalhad/CanvasRenderingContext2DMozilla,larsbergstrom/servo,michaelwu/servo,pyfisch/servo,paulrouget/servo,bfrohs/servo,boghison/servo,pyecs/servo,tafia/servo,AnthonyBroadCrawford/servo,j3parker/servo,mukilan/servo,froydnj/servo,dvberkel/servo,szeged/servo,karlito40/servo,brendandahl/servo,evilpie/servo,chotchki/servo,mattnenterprise/servo,tempbottle/servo,juzer10/servo,hyowon/servo,dagnir/servo,peterjoel/servo,splav/servo,pyfisch/servo,AnthonyBroadCrawford/servo,DominoTree/servo,SimonSapin/servo,srbhklkrn/SERVOENGINE,jdramani/servo,bfrohs/servo,caldwell/servo,WriterOfAlicrow/servo,CJ8664/servo,deokjinkim/servo,jlegendary/servo,codemac/servo,froydnj/servo,youprofit/servo,j3parker/servo,walac/servo,seanmonstar/servo,rnestler/servo,pgonda/servo,owaspjocur/servo,szeged/servo,WriterOfAlicrow/servo,jdramani/servo,youprofit/servo,jlegendary/servo,pyfisch/servo,GreenRecycleBin/servo,walac/servo,echochamber/servo,Adenilson/prototype-viewing-distance,dagnir/servo,deokjinkim/servo,akosel/servo,splav/servo,wpgallih/servo,pyfisch/servo,aweinstock314/servo,GreenRecycleBin/servo,rnestler/servo,chotchki/servo,dsandeephegde/servo,steveklabnik/servo,vks/servo,SimonSapin/servo,nick-thompson/servo,Aalhad/CanvasRenderingContext2DMozilla,steveklabnik/servo,karlito40/servo,thiagopnts/servo,paulrouget/servo,karlito40/servo,kindersung/servo,avadacatavra/servo,avadacatavra/servo,pgonda/servo,fiji-flo/servo,fiji-flo/servo,j3parker/servo,metajack/servo,dvberkel/servo,SimonSapin/servo,dagnir/servo,evilpie/servo,RenaudParis/servo,CJ8664/servo,luniv/servo,dvberkel/servo,kindersung/servo,dati91/servo,youprofit/servo,dmarcos/servo,walac/servo,Adenilson/prototype-viewing-distance,vks/servo,splav/servo,s142857/servo,dmarcos/servo,mdibaiee/servo,ryancanhelpyou/servo,ryancanhelpyou/servo,fiji-flo/servo,tafia/servo,peterjoel/servo,nerith/servo,chotchki/servo,tschneidereit/servo,zentner-kyle/servo,aweinstock314/servo,nick-thompson/servo,tempbottle/servo,michaelwu/servo,seanmonstar/servo,meh/servo,thiagopnts/servo,pyfisch/servo,RenaudParis/servo,bjwbell/servo,samfoo/servo,CJ8664/servo,tempbottle/servo,upsuper/servo,wartman4404/servo,g-k/servo,sadmansk/servo,notriddle/servo,ConnorGBrewster/servo,deokjinkim/servo,steveklabnik/servo,larsbergstrom/servo,zhangjunlei26/servo,nerith/servo,pyfisch/servo,saneyuki/servo,wartman4404/servo,metajack/servo,mt2d2/servo,jimberlage/servo,sadmansk/servo,DominoTree/servo,emilio/servo,brendandahl/servo,rnestler/servo,srbhklkrn/SERVOENGINE,pyfisch/servo,saneyuki/servo,g-k/servo,dati91/servo,cbrewster/servo,shrenikgala/servo,szeged/servo,pyecs/servo,nrc/servo,KiChjang/servo,szeged/servo,fiji-flo/servo,runarberg/servo,huonw/servo,aidanhs/servo,wpgallih/servo,notriddle/servo,mukilan/servo,jlegendary/servo,meh/servo,tschneidereit/servo,luniv/servo,rixrix/servo,mukilan/servo,wartman4404/servo,huonw/servo,notriddle/servo,larsbergstrom/servo,saneyuki/servo,GreenRecycleBin/servo,kindersung/servo,mt2d2/servo,juzer10/servo,notriddle/servo,larsbergstrom/servo,rentongzhang/servo,anthgur/servo,wartman4404/servo,GyrosOfWar/servo,deokjinkim/servo,snf/servo,DominoTree/servo,KiChjang/servo,jimberlage/servo,huonw/servo,anthgur/servo,upsuper/servo,jdramani/servo,jlegendary/servo,eddyb/servo,zentner-kyle/servo,eddyb/servo,tafia/servo,saneyuki/servo,jgraham/servo,A-deLuna/servo,evilpie/servo,thiagopnts/servo,dsandeephegde/servo,akosel/servo,rnestler/servo,ConnorGBrewster/servo,owaspjocur/servo,tempbottle/servo,aidanhs/servo,sadmansk/servo,ruud-v-a/servo,g-k/servo,zhangjunlei26/servo,ConnorGBrewster/servo,KiChjang/servo,AnthonyBroadCrawford/servo,DominoTree/servo,aweinstock314/servo,echochamber/servo,canaltinova/servo,DominoTree/servo,Adenilson/prototype-viewing-distance,Shraddha512/servo,canaltinova/servo,steveklabnik/servo,dati91/servo,snf/servo,kindersung/servo,peterjoel/servo,youprofit/servo,Adenilson/prototype-viewing-distance,szeged/servo,mdibaiee/servo,zentner-kyle/servo,wpgallih/servo,rnestler/servo,snf/servo,jimberlage/servo,emilio/servo,emilio/servo,nick-thompson/servo,avadacatavra/servo,canaltinova/servo,ConnorGBrewster/servo,dsandeephegde/servo,shrenikgala/servo,nnethercote/servo,larsbergstrom/servo,upsuper/servo,jlegendary/servo,paulrouget/servo,deokjinkim/servo,s142857/servo,huonw/servo,dmarcos/servo,wpgallih/servo,brendandahl/servo,dmarcos/servo,GyrosOfWar/servo,splav/servo,nick-thompson/servo,juzer10/servo,bfrohs/servo,nnethercote/servo,dagnir/servo,jgraham/servo,paulrouget/servo,dhananjay92/servo,pyfisch/servo,WriterOfAlicrow/servo,mbrubeck/servo,cbrewster/servo,kindersung/servo,canaltinova/servo,Shraddha512/servo,peterjoel/servo,ryancanhelpyou/servo,mattnenterprise/servo,pgonda/servo,nnethercote/servo,evilpie/servo,dsandeephegde/servo,bfrohs/servo,j3parker/servo,ConnorGBrewster/servo,owaspjocur/servo,canaltinova/servo,GreenRecycleBin/servo,zhangjunlei26/servo,paulrouget/servo,zentner-kyle/servo,samfoo/servo,caldwell/servo,CJ8664/servo,s142857/servo,mrobinson/servo,chotchki/servo,froydnj/servo,larsbergstrom/servo,dhananjay92/servo,avadacatavra/servo,jgraham/servo,DominoTree/servo,seanmonstar/servo,jimberlage/servo,shrenikgala/servo,karlito40/servo,mbrubeck/servo,notriddle/servo,peterjoel/servo,seanmonstar/servo,nick-thompson/servo,RenaudParis/servo,huonw/servo,echochamber/servo,meh/servo,tempbottle/servo,peterjoel/servo,pyfisch/servo,mbrubeck/servo,indykish/servo,GreenRecycleBin/servo,codemac/servo,avadacatavra/servo,GreenRecycleBin/servo,cbrewster/servo,s142857/servo,dati91/servo,srbhklkrn/SERVOENGINE,GyrosOfWar/servo,dhananjay92/servo,akosel/servo,zentner-kyle/servo,runarberg/servo,youprofit/servo,srbhklkrn/SERVOENGINE,aidanhs/servo,vks/servo,rentongzhang/servo,Shraddha512/servo,cbrewster/servo,karlito40/servo,zentner-kyle/servo,fiji-flo/servo,caldwell/servo,mdibaiee/servo,anthgur/servo,mattnenterprise/servo,jgraham/servo,dsandeephegde/servo,saratang/servo,wpgallih/servo,nnethercote/servo,luniv/servo,mbrubeck/servo,eddyb/servo,emilio/servo,dagnir/servo,srbhklkrn/SERVOENGINE,cbrewster/servo,anthgur/servo,huonw/servo,j3parker/servo,srbhklkrn/SERVOENGINE,dati91/servo,huonw/servo,mrobinson/servo,nrc/servo,WriterOfAlicrow/servo,runarberg/servo,pgonda/servo,rnestler/servo,notriddle/servo,ruud-v-a/servo,ryancanhelpyou/servo,vks/servo,juzer10/servo,saneyuki/servo,CJ8664/servo,snf/servo,mbrubeck/servo,runarberg/servo,saratang/servo,emilio/servo,metajack/servo,upsuper/servo,WriterOfAlicrow/servo,avadacatavra/servo,kindersung/servo,echochamber/servo,A-deLuna/servo,fiji-flo/servo,seanmonstar/servo,evilpie/servo,rentongzhang/servo,juzer10/servo,rnestler/servo,tempbottle/servo,mt2d2/servo,indykish/servo,Aalhad/CanvasRenderingContext2DMozilla,thiagopnts/servo,s142857/servo,dagnir/servo,ConnorGBrewster/servo,KiChjang/servo,steveklabnik/servo,tschneidereit/servo,nnethercote/servo,dsandeephegde/servo,szeged/servo,Aalhad/CanvasRenderingContext2DMozilla,GreenRecycleBin/servo,notriddle/servo,emilio/servo,walac/servo,walac/servo,hyowon/servo,rentongzhang/servo,KiChjang/servo,ConnorGBrewster/servo,fiji-flo/servo,caldwell/servo,indykish/servo,saneyuki/servo,samfoo/servo,wartman4404/servo,emilio/servo,jgraham/servo,brendandahl/servo,KiChjang/servo,notriddle/servo,juzer10/servo,shrenikgala/servo,nrc/servo,saratang/servo,g-k/servo,dsandeephegde/servo,youprofit/servo,Shraddha512/servo,chotchki/servo,wpgallih/servo,anthgur/servo,mdibaiee/servo,brendandahl/servo,mattnenterprise/servo,Aalhad/CanvasRenderingContext2DMozilla,ryancanhelpyou/servo,ConnorGBrewster/servo,mdibaiee/servo,kindersung/servo,mattnenterprise/servo,froydnj/servo,caldwell/servo,indykish/servo,juzer10/servo,mattnenterprise/servo,tempbottle/servo,CJ8664/servo,pyecs/servo,boghison/servo,meh/servo,nnethercote/servo,A-deLuna/servo,samfoo/servo