[gardening][build-script-impl] Use += with arrays.
[gardening][build-script-impl] Use += with arrays.

Its cleaner than doing:

array=(
  "${array[@]}"
  x
  y
)

parkera/swift,shahmishal/swift,return/swift,tardieu/swift,IngmarStein/swift,CodaFi/swift,tardieu/swift,kstaring/swift,xwu/swift,ken0nek/swift,nathawes/swift,danielmartin/swift,milseman/swift,deyton/swift,amraboelela/swift,airspeedswift/swift,return/swift,parkera/swift,therealbnut/swift,apple/swift,jckarter/swift,devincoughlin/swift,zisko/swift,jopamer/swift,harlanhaskins/swift,xwu/swift,harlanhaskins/swift,brentdax/swift,jtbandes/swift,glessard/swift,atrick/swift,danielmartin/swift,milseman/swift,roambotics/swift,frootloops/swift,hooman/swift,arvedviehweger/swift,glessard/swift,lorentey/swift,jopamer/swift,JaSpa/swift,ahoppen/swift,russbishop/swift,djwbrown/swift,gribozavr/swift,arvedviehweger/swift,djwbrown/swift,hughbe/swift,xwu/swift,karwa/swift,kperryua/swift,sschiau/swift,hooman/swift,arvedviehweger/swift,russbishop/swift,bitjammer/swift,tkremenek/swift,tkremenek/swift,ahoppen/swift,ben-ng/swift,tjw/swift,rudkx/swift,manavgabhawala/swift,jtbandes/swift,austinzheng/swift,apple/swift,alblue/swift,CodaFi/swift,milseman/swift,sschiau/swift,jmgc/swift,arvedviehweger/swift,gottesmm/swift,hooman/swift,harlanhaskins/swift,swiftix/swift,frootloops/swift,milseman/swift,therealbnut/swift,ahoppen/swift,huonw/swift,gribozavr/swift,shajrawi/swift,jckarter/swift,nathawes/swift,djwbrown/swift,roambotics/swift,lorentey/swift,gmilos/swift,amraboelela/swift,alblue/swift,hughbe/swift,ken0nek/swift,codestergit/swift,brentdax/swift,danielmartin/swift,arvedviehweger/swift,aschwaighofer/swift,parkera/swift,allevato/swift,rudkx/swift,zisko/swift,karwa/swift,tjw/swift,milseman/swift,jmgc/swift,apple/swift,tkremenek/swift,xwu/swift,milseman/swift,manavgabhawala/swift,practicalswift/swift,JaSpa/swift,nathawes/swift,bitjammer/swift,hooman/swift,lorentey/swift,tkremenek/swift,benlangmuir/swift,modocache/swift,ken0nek/swift,karwa/swift,airspeedswift/swift,bitjammer/swift,roambotics/swift,swiftix/swift,airspeedswift/swift,aschwaighofer/swift,gottesmm/swift,codestergit/swift,modocache/swift,ben-ng/swift,gottesmm/swift,danielmartin/swift,kstaring/swift,hughbe/swift,stephentyrone/swift,frootloops/swift,ben-ng/swift,felix91gr/swift,shajrawi/swift,manavgabhawala/swift,return/swift,brentdax/swift,kperryua/swift,huonw/swift,danielmartin/swift,kstaring/swift,uasys/swift,benlangmuir/swift,ben-ng/swift,codestergit/swift,sschiau/swift,uasys/swift,gottesmm/swift,gmilos/swift,hughbe/swift,practicalswift/swift,atrick/swift,OscarSwanros/swift,harlanhaskins/swift,harlanhaskins/swift,jtbandes/swift,practicalswift/swift,ken0nek/swift,alblue/swift,kstaring/swift,practicalswift/swift,CodaFi/swift,apple/swift,parkera/swift,gmilos/swift,devincoughlin/swift,xedin/swift,karwa/swift,xedin/swift,return/swift,lorentey/swift,rudkx/swift,rudkx/swift,gottesmm/swift,therealbnut/swift,lorentey/swift,danielmartin/swift,roambotics/swift,shajrawi/swift,JGiola/swift,gregomni/swift,lorentey/swift,CodaFi/swift,harlanhaskins/swift,aschwaighofer/swift,nathawes/swift,xwu/swift,manavgabhawala/swift,OscarSwanros/swift,jopamer/swift,OscarSwanros/swift,jopamer/swift,benlangmuir/swift,modocache/swift,atrick/swift,huonw/swift,xedin/swift,shahmishal/swift,JaSpa/swift,sschiau/swift,JGiola/swift,shahmishal/swift,dreamsxin/swift,atrick/swift,aschwaighofer/swift,gribozavr/swift,gregomni/swift,tinysun212/swift-windows,parkera/swift,amraboelela/swift,shahmishal/swift,roambotics/swift,sschiau/swift,hughbe/swift,ben-ng/swift,OscarSwanros/swift,jtbandes/swift,natecook1000/swift,nathawes/swift,tkremenek/swift,swiftix/swift,xedin/swift,swiftix/swift,CodaFi/swift,practicalswift/swift,deyton/swift,IngmarStein/swift,natecook1000/swift,zisko/swift,natecook1000/swift,airspeedswift/swift,alblue/swift,allevato/swift,deyton/swift,calebd/swift,therealbnut/swift,tardieu/swift,austinzheng/swift,allevato/swift,tkremenek/swift,tardieu/swift,shahmishal/swift,austinzheng/swift,therealbnut/swift,calebd/swift,devincoughlin/swift,russbishop/swift,jckarter/swift,ben-ng/swift,nathawes/swift,alblue/swift,calebd/swift,tinysun212/swift-windows,glessard/swift,gribozavr/swift,devincoughlin/swift,natecook1000/swift,stephentyrone/swift,OscarSwanros/swift,sschiau/swift,kperryua/swift,IngmarStein/swift,return/swift,natecook1000/swift,apple/swift,jopamer/swift,gregomni/swift,airspeedswift/swift,shajrawi/swift,benlangmuir/swift,russbishop/swift,airspeedswift/swift,aschwaighofer/swift,arvedviehweger/swift,kstaring/swift,deyton/swift,OscarSwanros/swift,IngmarStein/swift,jopamer/swift,jckarter/swift,practicalswift/swift,deyton/swift,kstaring/swift,calebd/swift,jtbandes/swift,JaSpa/swift,amraboelela/swift,ahoppen/swift,xwu/swift,karwa/swift,IngmarStein/swift,allevato/swift,jmgc/swift,felix91gr/swift,swiftix/swift,felix91gr/swift,xwu/swift,gribozavr/swift,tinysun212/swift-windows,tinysun212/swift-windows,jckarter/swift,return/swift,JGiola/swift,xedin/swift,kperryua/swift,xedin/swift,uasys/swift,tardieu/swift,JaSpa/swift,zisko/swift,modocache/swift,airspeedswift/swift,manavgabhawala/swift,practicalswift/swift,austinzheng/swift,zisko/swift,karwa/swift,tjw/swift,felix91gr/swift,jckarter/swift,gottesmm/swift,codestergit/swift,tardieu/swift,tinysun212/swift-windows,glessard/swift,kperryua/swift,kstaring/swift,shahmishal/swift,frootloops/swift,ahoppen/swift,djwbrown/swift,sschiau/swift,parkera/swift,JaSpa/swift,CodaFi/swift,shahmishal/swift,swiftix/swift,gregomni/swift,huonw/swift,brentdax/swift,huonw/swift,uasys/swift,benlangmuir/swift,allevato/swift,allevato/swift,djwbrown/swift,djwbrown/swift,gmilos/swift,tinysun212/swift-windows,stephentyrone/swift,xedin/swift,hooman/swift,hooman/swift,shajrawi/swift,brentdax/swift,lorentey/swift,amraboelela/swift,atrick/swift,devincoughlin/swift,IngmarStein/swift,djwbrown/swift,ben-ng/swift,shajrawi/swift,frootloops/swift,modocache/swift,rudkx/swift,gribozavr/swift,frootloops/swift,rudkx/swift,atrick/swift,gribozavr/swift,uasys/swift,glessard/swift,manavgabhawala/swift,ken0nek/swift,aschwaighofer/swift,return/swift,arvedviehweger/swift,modocache/swift,Jnosh/swift,uasys/swift,parkera/swift,russbishop/swift,kperryua/swift,huonw/swift,ken0nek/swift,calebd/swift,ahoppen/swift,bitjammer/swift,JaSpa/swift,zisko/swift,deyton/swift,lorentey/swift,Jnosh/swift,alblue/swift,calebd/swift,milseman/swift,shahmishal/swift,harlanhaskins/swift,devincoughlin/swift,tjw/swift,hughbe/swift,jckarter/swift,natecook1000/swift,jopamer/swift,parkera/swift,stephentyrone/swift,tkremenek/swift,swiftix/swift,gmilos/swift,bitjammer/swift,gottesmm/swift,roambotics/swift,brentdax/swift,modocache/swift,codestergit/swift,jmgc/swift,devincoughlin/swift,JGiola/swift,karwa/swift,jtbandes/swift,tjw/swift,shajrawi/swift,gmilos/swift,Jnosh/swift,aschwaighofer/swift,gmilos/swift,frootloops/swift,codestergit/swift,stephentyrone/swift,glessard/swift,apple/swift,felix91gr/swift,russbishop/swift,brentdax/swift,tjw/swift,dreamsxin/swift,practicalswift/swift,gribozavr/swift,russbishop/swift,calebd/swift,uasys/swift,allevato/swift,stephentyrone/swift,felix91gr/swift,JGiola/swift,IngmarStein/swift,OscarSwanros/swift,sschiau/swift,xedin/swift,natecook1000/swift,zisko/swift,kperryua/swift,nathawes/swift,stephentyrone/swift,tinysun212/swift-windows,jmgc/swift,jmgc/swift,ken0nek/swift,bitjammer/swift,codestergit/swift,Jnosh/swift,Jnosh/swift,manavgabhawala/swift,austinzheng/swift,therealbnut/swift,gregomni/swift,devincoughlin/swift,jtbandes/swift,CodaFi/swift,austinzheng/swift,Jnosh/swift,therealbnut/swift,tjw/swift,tardieu/swift,felix91gr/swift,amraboelela/swift,JGiola/swift,deyton/swift,jmgc/swift,austinzheng/swift,bitjammer/swift,huonw/swift,gregomni/swift,hooman/swift,amraboelela/swift,karwa/swift,benlangmuir/swift,danielmartin/swift,Jnosh/swift,alblue/swift,hughbe/swift,shajrawi/swift