Ignore missing foundation and libdispatch build directories when attempting to remove them on non-darwin platforms.
Ignore missing foundation and libdispatch build directories when attempting to remove them on non-darwin platforms.

danielmartin/swift,lorentey/swift,sschiau/swift,jmgc/swift,devincoughlin/swift,huonw/swift,gregomni/swift,brentdax/swift,aschwaighofer/swift,jckarter/swift,tkremenek/swift,shahmishal/swift,devincoughlin/swift,airspeedswift/swift,alblue/swift,gregomni/swift,amraboelela/swift,glessard/swift,amraboelela/swift,JGiola/swift,atrick/swift,alblue/swift,jckarter/swift,parkera/swift,rudkx/swift,tjw/swift,danielmartin/swift,jopamer/swift,shajrawi/swift,xwu/swift,airspeedswift/swift,allevato/swift,JGiola/swift,airspeedswift/swift,jmgc/swift,lorentey/swift,aschwaighofer/swift,glessard/swift,amraboelela/swift,glessard/swift,alblue/swift,zisko/swift,nathawes/swift,parkera/swift,jmgc/swift,atrick/swift,parkera/swift,airspeedswift/swift,frootloops/swift,frootloops/swift,CodaFi/swift,practicalswift/swift,atrick/swift,sschiau/swift,CodaFi/swift,airspeedswift/swift,karwa/swift,natecook1000/swift,shahmishal/swift,nathawes/swift,allevato/swift,apple/swift,practicalswift/swift,apple/swift,zisko/swift,ahoppen/swift,jopamer/swift,karwa/swift,alblue/swift,practicalswift/swift,xedin/swift,jckarter/swift,tkremenek/swift,harlanhaskins/swift,allevato/swift,austinzheng/swift,allevato/swift,tkremenek/swift,jopamer/swift,tjw/swift,devincoughlin/swift,alblue/swift,sschiau/swift,sschiau/swift,danielmartin/swift,xedin/swift,shahmishal/swift,austinzheng/swift,hooman/swift,shajrawi/swift,frootloops/swift,alblue/swift,hooman/swift,karwa/swift,jckarter/swift,sschiau/swift,roambotics/swift,gregomni/swift,rudkx/swift,apple/swift,xwu/swift,parkera/swift,gribozavr/swift,zisko/swift,frootloops/swift,huonw/swift,benlangmuir/swift,roambotics/swift,practicalswift/swift,huonw/swift,xwu/swift,glessard/swift,xedin/swift,austinzheng/swift,stephentyrone/swift,harlanhaskins/swift,stephentyrone/swift,jmgc/swift,hooman/swift,xedin/swift,benlangmuir/swift,practicalswift/swift,lorentey/swift,zisko/swift,parkera/swift,natecook1000/swift,glessard/swift,gribozavr/swift,devincoughlin/swift,jopamer/swift,xedin/swift,huonw/swift,apple/swift,jopamer/swift,alblue/swift,airspeedswift/swift,amraboelela/swift,roambotics/swift,devincoughlin/swift,ahoppen/swift,harlanhaskins/swift,aschwaighofer/swift,gribozavr/swift,benlangmuir/swift,jckarter/swift,roambotics/swift,ahoppen/swift,harlanhaskins/swift,harlanhaskins/swift,tjw/swift,gribozavr/swift,xedin/swift,rudkx/swift,CodaFi/swift,nathawes/swift,shahmishal/swift,shajrawi/swift,lorentey/swift,aschwaighofer/swift,austinzheng/swift,natecook1000/swift,shajrawi/swift,tkremenek/swift,shahmishal/swift,parkera/swift,JGiola/swift,xwu/swift,JGiola/swift,sschiau/swift,amraboelela/swift,karwa/swift,karwa/swift,frootloops/swift,tjw/swift,gribozavr/swift,stephentyrone/swift,benlangmuir/swift,danielmartin/swift,ahoppen/swift,amraboelela/swift,austinzheng/swift,lorentey/swift,ahoppen/swift,frootloops/swift,stephentyrone/swift,CodaFi/swift,benlangmuir/swift,parkera/swift,huonw/swift,sschiau/swift,atrick/swift,practicalswift/swift,hooman/swift,xwu/swift,hooman/swift,shahmishal/swift,brentdax/swift,brentdax/swift,shahmishal/swift,natecook1000/swift,apple/swift,shajrawi/swift,shajrawi/swift,atrick/swift,huonw/swift,danielmartin/swift,jckarter/swift,devincoughlin/swift,hooman/swift,shajrawi/swift,danielmartin/swift,parkera/swift,natecook1000/swift,brentdax/swift,aschwaighofer/swift,nathawes/swift,amraboelela/swift,shahmishal/swift,xwu/swift,brentdax/swift,brentdax/swift,practicalswift/swift,xedin/swift,allevato/swift,jmgc/swift,harlanhaskins/swift,shajrawi/swift,jopamer/swift,harlanhaskins/swift,atrick/swift,karwa/swift,zisko/swift,natecook1000/swift,huonw/swift,lorentey/swift,roambotics/swift,tkremenek/swift,gregomni/swift,rudkx/swift,hooman/swift,aschwaighofer/swift,karwa/swift,frootloops/swift,natecook1000/swift,rudkx/swift,karwa/swift,devincoughlin/swift,austinzheng/swift,gribozavr/swift,CodaFi/swift,nathawes/swift,lorentey/swift,stephentyrone/swift,jmgc/swift,gribozavr/swift,tjw/swift,practicalswift/swift,allevato/swift,ahoppen/swift,tjw/swift,glessard/swift,allevato/swift,stephentyrone/swift,nathawes/swift,JGiola/swift,gribozavr/swift,apple/swift,xedin/swift,jopamer/swift,zisko/swift,brentdax/swift,austinzheng/swift,devincoughlin/swift,CodaFi/swift,stephentyrone/swift,airspeedswift/swift,CodaFi/swift,gregomni/swift,benlangmuir/swift,aschwaighofer/swift,JGiola/swift,jckarter/swift,sschiau/swift,nathawes/swift,tkremenek/swift,tjw/swift,rudkx/swift,jmgc/swift,danielmartin/swift,roambotics/swift,xwu/swift,zisko/swift,tkremenek/swift,gregomni/swift,lorentey/swift