[CMake] Check if a cmake variable 'SWIFT_INSTALL_EXCLUDE_[component]' is set for a component.
[CMake] Check if a cmake variable 'SWIFT_INSTALL_EXCLUDE_[component]' is set for a component.

In which case the 'SWIFT_INSTALL_[component]' will be FALSE.
This is useful to get the behavior where all components are set to install by default and exclude just a specific one.

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