[gardening] cd into SWIFT_SOURCE_ROOT once for all directories, instead of for each directory.
[gardening] cd into SWIFT_SOURCE_ROOT once for all directories, instead of for each directory.

NFC.

arvedviehweger/swift,tjw/swift,rudkx/swift,deyton/swift,shahmishal/swift,swiftix/swift,Jnosh/swift,gottesmm/swift,ben-ng/swift,karwa/swift,bitjammer/swift,nathawes/swift,tjw/swift,tkremenek/swift,gottesmm/swift,uasys/swift,swiftix/swift,rudkx/swift,swiftix/swift,kperryua/swift,amraboelela/swift,benlangmuir/swift,ahoppen/swift,danielmartin/swift,hughbe/swift,alblue/swift,jmgc/swift,codestergit/swift,bitjammer/swift,therealbnut/swift,atrick/swift,gmilos/swift,jopamer/swift,rudkx/swift,codestergit/swift,gmilos/swift,tinysun212/swift-windows,Jnosh/swift,kstaring/swift,lorentey/swift,roambotics/swift,IngmarStein/swift,OscarSwanros/swift,calebd/swift,allevato/swift,stephentyrone/swift,practicalswift/swift,jckarter/swift,shahmishal/swift,ben-ng/swift,frootloops/swift,jtbandes/swift,CodaFi/swift,milseman/swift,benlangmuir/swift,sschiau/swift,therealbnut/swift,therealbnut/swift,xedin/swift,parkera/swift,shahmishal/swift,sschiau/swift,ben-ng/swift,glessard/swift,airspeedswift/swift,brentdax/swift,brentdax/swift,tardieu/swift,airspeedswift/swift,deyton/swift,glessard/swift,glessard/swift,amraboelela/swift,lorentey/swift,practicalswift/swift,huonw/swift,CodaFi/swift,roambotics/swift,jopamer/swift,djwbrown/swift,manavgabhawala/swift,hughbe/swift,JGiola/swift,JaSpa/swift,OscarSwanros/swift,austinzheng/swift,djwbrown/swift,alblue/swift,kperryua/swift,amraboelela/swift,danielmartin/swift,russbishop/swift,karwa/swift,jtbandes/swift,natecook1000/swift,atrick/swift,hooman/swift,shahmishal/swift,arvedviehweger/swift,xwu/swift,rudkx/swift,austinzheng/swift,hughbe/swift,ahoppen/swift,sschiau/swift,harlanhaskins/swift,jckarter/swift,CodaFi/swift,brentdax/swift,aschwaighofer/swift,kperryua/swift,tjw/swift,huonw/swift,ben-ng/swift,JaSpa/swift,devincoughlin/swift,harlanhaskins/swift,IngmarStein/swift,russbishop/swift,apple/swift,lorentey/swift,milseman/swift,jckarter/swift,JGiola/swift,shajrawi/swift,jckarter/swift,aschwaighofer/swift,karwa/swift,sschiau/swift,uasys/swift,gribozavr/swift,gottesmm/swift,allevato/swift,xedin/swift,brentdax/swift,alblue/swift,gribozavr/swift,ahoppen/swift,gottesmm/swift,apple/swift,devincoughlin/swift,stephentyrone/swift,JaSpa/swift,xedin/swift,alblue/swift,JaSpa/swift,modocache/swift,tinysun212/swift-windows,practicalswift/swift,tkremenek/swift,uasys/swift,nathawes/swift,tardieu/swift,return/swift,codestergit/swift,aschwaighofer/swift,Jnosh/swift,tjw/swift,russbishop/swift,arvedviehweger/swift,milseman/swift,OscarSwanros/swift,ahoppen/swift,gribozavr/swift,tjw/swift,jmgc/swift,jmgc/swift,xedin/swift,karwa/swift,xwu/swift,aschwaighofer/swift,bitjammer/swift,djwbrown/swift,ahoppen/swift,amraboelela/swift,CodaFi/swift,swiftix/swift,jopamer/swift,jtbandes/swift,tkremenek/swift,JGiola/swift,xwu/swift,huonw/swift,jckarter/swift,frootloops/swift,jmgc/swift,nathawes/swift,lorentey/swift,felix91gr/swift,xedin/swift,modocache/swift,ben-ng/swift,parkera/swift,modocache/swift,tkremenek/swift,apple/swift,natecook1000/swift,return/swift,shahmishal/swift,felix91gr/swift,ahoppen/swift,shajrawi/swift,alblue/swift,hughbe/swift,jopamer/swift,nathawes/swift,benlangmuir/swift,milseman/swift,arvedviehweger/swift,tinysun212/swift-windows,gmilos/swift,tjw/swift,OscarSwanros/swift,milseman/swift,jtbandes/swift,hughbe/swift,allevato/swift,IngmarStein/swift,codestergit/swift,rudkx/swift,zisko/swift,jmgc/swift,huonw/swift,bitjammer/swift,tinysun212/swift-windows,natecook1000/swift,hughbe/swift,hooman/swift,bitjammer/swift,gmilos/swift,arvedviehweger/swift,parkera/swift,airspeedswift/swift,JaSpa/swift,danielmartin/swift,devincoughlin/swift,zisko/swift,natecook1000/swift,therealbnut/swift,karwa/swift,zisko/swift,gmilos/swift,xwu/swift,gribozavr/swift,hooman/swift,tinysun212/swift-windows,kperryua/swift,allevato/swift,deyton/swift,kstaring/swift,huonw/swift,gregomni/swift,practicalswift/swift,tardieu/swift,shajrawi/swift,kperryua/swift,IngmarStein/swift,austinzheng/swift,devincoughlin/swift,xwu/swift,return/swift,Jnosh/swift,manavgabhawala/swift,gribozavr/swift,lorentey/swift,jtbandes/swift,aschwaighofer/swift,austinzheng/swift,devincoughlin/swift,OscarSwanros/swift,return/swift,shajrawi/swift,JaSpa/swift,natecook1000/swift,karwa/swift,zisko/swift,roambotics/swift,JaSpa/swift,gribozavr/swift,parkera/swift,xwu/swift,practicalswift/swift,amraboelela/swift,gmilos/swift,gregomni/swift,kstaring/swift,danielmartin/swift,gmilos/swift,xedin/swift,calebd/swift,deyton/swift,felix91gr/swift,huonw/swift,shajrawi/swift,airspeedswift/swift,djwbrown/swift,russbishop/swift,IngmarStein/swift,calebd/swift,gottesmm/swift,jtbandes/swift,jopamer/swift,felix91gr/swift,hooman/swift,parkera/swift,return/swift,codestergit/swift,gottesmm/swift,jmgc/swift,gribozavr/swift,amraboelela/swift,huonw/swift,tkremenek/swift,tjw/swift,milseman/swift,IngmarStein/swift,kperryua/swift,apple/swift,shahmishal/swift,lorentey/swift,jopamer/swift,stephentyrone/swift,uasys/swift,devincoughlin/swift,jtbandes/swift,modocache/swift,lorentey/swift,stephentyrone/swift,apple/swift,felix91gr/swift,russbishop/swift,stephentyrone/swift,codestergit/swift,tardieu/swift,return/swift,roambotics/swift,ben-ng/swift,uasys/swift,aschwaighofer/swift,airspeedswift/swift,sschiau/swift,benlangmuir/swift,hooman/swift,shajrawi/swift,airspeedswift/swift,Jnosh/swift,Jnosh/swift,shahmishal/swift,modocache/swift,sschiau/swift,calebd/swift,xwu/swift,aschwaighofer/swift,atrick/swift,roambotics/swift,apple/swift,deyton/swift,natecook1000/swift,practicalswift/swift,tardieu/swift,manavgabhawala/swift,glessard/swift,kstaring/swift,djwbrown/swift,JGiola/swift,allevato/swift,arvedviehweger/swift,xedin/swift,shahmishal/swift,hooman/swift,shajrawi/swift,gribozavr/swift,natecook1000/swift,felix91gr/swift,harlanhaskins/swift,devincoughlin/swift,felix91gr/swift,IngmarStein/swift,allevato/swift,calebd/swift,frootloops/swift,gregomni/swift,devincoughlin/swift,amraboelela/swift,nathawes/swift,kstaring/swift,swiftix/swift,russbishop/swift,frootloops/swift,parkera/swift,modocache/swift,JGiola/swift,tkremenek/swift,tinysun212/swift-windows,tardieu/swift,uasys/swift,djwbrown/swift,therealbnut/swift,benlangmuir/swift,therealbnut/swift,kstaring/swift,lorentey/swift,sschiau/swift,austinzheng/swift,calebd/swift,benlangmuir/swift,gregomni/swift,therealbnut/swift,tkremenek/swift,xedin/swift,gottesmm/swift,harlanhaskins/swift,CodaFi/swift,zisko/swift,manavgabhawala/swift,harlanhaskins/swift,austinzheng/swift,manavgabhawala/swift,djwbrown/swift,danielmartin/swift,ben-ng/swift,brentdax/swift,danielmartin/swift,uasys/swift,kstaring/swift,zisko/swift,harlanhaskins/swift,stephentyrone/swift,danielmartin/swift,jopamer/swift,OscarSwanros/swift,roambotics/swift,glessard/swift,glessard/swift,parkera/swift,atrick/swift,rudkx/swift,atrick/swift,brentdax/swift,airspeedswift/swift,bitjammer/swift,return/swift,practicalswift/swift,CodaFi/swift,hooman/swift,russbishop/swift,jckarter/swift,allevato/swift,jmgc/swift,jckarter/swift,harlanhaskins/swift,arvedviehweger/swift,sschiau/swift,manavgabhawala/swift,frootloops/swift,deyton/swift,swiftix/swift,parkera/swift,OscarSwanros/swift,austinzheng/swift,deyton/swift,alblue/swift,tardieu/swift,atrick/swift,nathawes/swift,manavgabhawala/swift,nathawes/swift,zisko/swift,modocache/swift,kperryua/swift,tinysun212/swift-windows,calebd/swift,milseman/swift,brentdax/swift,Jnosh/swift,gregomni/swift,CodaFi/swift,codestergit/swift,karwa/swift,karwa/swift,shajrawi/swift,swiftix/swift,JGiola/swift,gregomni/swift,stephentyrone/swift,bitjammer/swift,frootloops/swift,frootloops/swift,practicalswift/swift,hughbe/swift,alblue/swift