make some XCToolUtil functions always invoke the NSTask under test.
make some XCToolUtil functions always invoke the NSTask under test.

We want these functions to always invoke the NSTask so that we can
properly test them.

FiftyThree/xctool,theiren46/xctool,kamoljan/xctool,dvor/xctool,lpios/xctool,trello/xctool,kamoljan/xctool,n054/xctool,Monits/xctool,leopardpan/xctool,lqi/xctool,agreco/xctool,PSPDFKit-labs/xctool,0xced/xctool,yaoxiaoyong/xctool,agreco/xctool,bhamiltoncx/xctool,bgertzfield/xctool,kernandreas/xctool,adamjernst/xctool,n054/xctool,lpios/xctool,bgertzfield/xctool,bgertzfield/xctool,lqi/xctool,AutoScout24/xctool,adamjernst/xctool,n054/xctool,dvor/xctool,facebook/xctool,jspahrsummers/xctool,facebook/xctool,PSPDFKit-labs/xctool,theiren46/xctool,Monits/xctool,1yvT0s/xctool,facebook/xctool,githubdelegate/xctool,adamjernst/xctool,blighli/xctool,ACChe/xctool,modulexcite/xctool,PSPDFKit-labs/xctool,kcoons/xctool,agreco/xctool,bhamiltoncx/xctool,SuPair/xctool,ACChe/xctool,ACChe/xctool,soundcloud/xctool,Richardlihui/xctool,1yvT0s/xctool,githubdelegate/xctool,FiftyThree/xctool,facebook/xctool,PSPDFKit-labs/xctool,facebook/xctool,kamoljan/xctool,blighli/xctool,SuPair/xctool,kamoljan/xctool,ekingo/xctool,LegNeato/xctool,SuPair/xctool,yaoxiaoyong/xctool,ekingo/xctool,lpios/xctool,AutoScout24/xctool,dvor/xctool,ACChe/xctool,Richardlihui/xctool,n054/xctool,Richardlihui/xctool,1yvT0s/xctool,adamjernst/xctool,blighli/xctool,AutoScout24/xctool,modulexcite/xctool,modulexcite/xctool,leopardpan/xctool,yaoxiaoyong/xctool,LegNeato/xctool,ACChe/xctool,n054/xctool,kcoons/xctool,ACChe/xctool,n054/xctool,duk42111/xctool,SuPair/xctool,lpios/xctool,FiftyThree/xctool,kernandreas/xctool,PSPDFKit-labs/xctool,soundcloud/xctool,bgertzfield/xctool,bgertzfield/xctool,Monits/xctool,trello/xctool,theiren46/xctool,githubdelegate/xctool,leopardpan/xctool,1yvT0s/xctool,Monits/xctool,trello/xctool,githubdelegate/xctool,LegNeato/xctool,ekingo/xctool,agreco/xctool,AutoScout24/xctool,leopardpan/xctool,theiren46/xctool,soundcloud/xctool,bgertzfield/xctool,duk42111/xctool,soundcloud/xctool,bhamiltoncx/xctool,jspahrsummers/xctool,LegNeato/xctool,lpios/xctool,trello/xctool,modulexcite/xctool,lpios/xctool,facebook/xctool,Richardlihui/xctool,bhamiltoncx/xctool,jspahrsummers/xctool,FiftyThree/xctool,kcoons/xctool,soundcloud/xctool,soundcloud/xctool,kernandreas/xctool,yaoxiaoyong/xctool,dvor/xctool,jspahrsummers/xctool,kernandreas/xctool,duk42111/xctool,ekingo/xctool,0xced/xctool,blighli/xctool,bhamiltoncx/xctool,bhamiltoncx/xctool,duk42111/xctool,lqi/xctool