IRGen: Use 4 byte alignment for reflection metadata section
IRGen: Use 4 byte alignment for reflection metadata section

Otherwise, we will insert padding if the field metadata section size
is not a multiple of the word size, which will cause a crash when
we later try to read it.

austinzheng/swift,gregomni/swift,practicalswift/swift,sschiau/swift,stephentyrone/swift,rudkx/swift,austinzheng/swift,ben-ng/swift,roambotics/swift,aschwaighofer/swift,johnno1962d/swift,therealbnut/swift,JGiola/swift,jmgc/swift,shajrawi/swift,felix91gr/swift,hughbe/swift,IngmarStein/swift,lorentey/swift,russbishop/swift,ahoppen/swift,calebd/swift,allevato/swift,deyton/swift,milseman/swift,hughbe/swift,austinzheng/swift,Jnosh/swift,practicalswift/swift,atrick/swift,lorentey/swift,codestergit/swift,shajrawi/swift,tinysun212/swift-windows,tkremenek/swift,JaSpa/swift,kperryua/swift,danielmartin/swift,zisko/swift,tkremenek/swift,arvedviehweger/swift,gregomni/swift,calebd/swift,harlanhaskins/swift,zisko/swift,parkera/swift,apple/swift,roambotics/swift,shahmishal/swift,parkera/swift,alblue/swift,jmgc/swift,apple/swift,calebd/swift,airspeedswift/swift,jmgc/swift,ben-ng/swift,shajrawi/swift,devincoughlin/swift,rudkx/swift,xedin/swift,danielmartin/swift,tinysun212/swift-windows,jckarter/swift,danielmartin/swift,amraboelela/swift,therealbnut/swift,tkremenek/swift,deyton/swift,djwbrown/swift,gmilos/swift,OscarSwanros/swift,harlanhaskins/swift,JaSpa/swift,shahmishal/swift,djwbrown/swift,allevato/swift,uasys/swift,gribozavr/swift,aschwaighofer/swift,JGiola/swift,JGiola/swift,gottesmm/swift,codestergit/swift,JaSpa/swift,swiftix/swift,huonw/swift,bitjammer/swift,tjw/swift,atrick/swift,OscarSwanros/swift,felix91gr/swift,tardieu/swift,JGiola/swift,shahmishal/swift,modocache/swift,airspeedswift/swift,atrick/swift,frootloops/swift,bitjammer/swift,milseman/swift,arvedviehweger/swift,jmgc/swift,hooman/swift,huonw/swift,jckarter/swift,IngmarStein/swift,devincoughlin/swift,tjw/swift,djwbrown/swift,OscarSwanros/swift,manavgabhawala/swift,natecook1000/swift,codestergit/swift,karwa/swift,natecook1000/swift,hughbe/swift,shajrawi/swift,alblue/swift,dreamsxin/swift,frootloops/swift,xedin/swift,tjw/swift,jckarter/swift,kstaring/swift,alblue/swift,OscarSwanros/swift,harlanhaskins/swift,uasys/swift,parkera/swift,ben-ng/swift,CodaFi/swift,ken0nek/swift,codestergit/swift,arvedviehweger/swift,harlanhaskins/swift,shahmishal/swift,therealbnut/swift,kstaring/swift,atrick/swift,gmilos/swift,jtbandes/swift,hooman/swift,brentdax/swift,return/swift,benlangmuir/swift,bitjammer/swift,modocache/swift,JaSpa/swift,gregomni/swift,xwu/swift,johnno1962d/swift,gmilos/swift,huonw/swift,airspeedswift/swift,zisko/swift,swiftix/swift,amraboelela/swift,brentdax/swift,russbishop/swift,xedin/swift,calebd/swift,gregomni/swift,nathawes/swift,uasys/swift,stephentyrone/swift,jopamer/swift,tardieu/swift,hughbe/swift,ahoppen/swift,practicalswift/swift,johnno1962d/swift,karwa/swift,jtbandes/swift,gregomni/swift,therealbnut/swift,uasys/swift,tjw/swift,Jnosh/swift,kperryua/swift,benlangmuir/swift,frootloops/swift,OscarSwanros/swift,therealbnut/swift,alblue/swift,CodaFi/swift,jopamer/swift,return/swift,uasys/swift,danielmartin/swift,felix91gr/swift,swiftix/swift,tinysun212/swift-windows,tardieu/swift,swiftix/swift,felix91gr/swift,glessard/swift,xwu/swift,milseman/swift,hooman/swift,gottesmm/swift,return/swift,karwa/swift,apple/swift,frootloops/swift,modocache/swift,stephentyrone/swift,karwa/swift,deyton/swift,arvedviehweger/swift,bitjammer/swift,lorentey/swift,huonw/swift,parkera/swift,practicalswift/swift,tinysun212/swift-windows,deyton/swift,karwa/swift,ken0nek/swift,tardieu/swift,zisko/swift,amraboelela/swift,practicalswift/swift,natecook1000/swift,kstaring/swift,IngmarStein/swift,xwu/swift,jmgc/swift,airspeedswift/swift,danielmartin/swift,glessard/swift,ben-ng/swift,codestergit/swift,jckarter/swift,gribozavr/swift,OscarSwanros/swift,gribozavr/swift,roambotics/swift,huonw/swift,johnno1962d/swift,jtbandes/swift,stephentyrone/swift,aschwaighofer/swift,frootloops/swift,gregomni/swift,aschwaighofer/swift,tjw/swift,kstaring/swift,Jnosh/swift,manavgabhawala/swift,stephentyrone/swift,apple/swift,danielmartin/swift,jckarter/swift,practicalswift/swift,rudkx/swift,manavgabhawala/swift,lorentey/swift,gribozavr/swift,codestergit/swift,milseman/swift,russbishop/swift,huonw/swift,hooman/swift,austinzheng/swift,amraboelela/swift,Jnosh/swift,ken0nek/swift,djwbrown/swift,IngmarStein/swift,zisko/swift,hooman/swift,devincoughlin/swift,codestergit/swift,parkera/swift,frootloops/swift,ahoppen/swift,allevato/swift,kperryua/swift,tkremenek/swift,tkremenek/swift,jckarter/swift,johnno1962d/swift,airspeedswift/swift,manavgabhawala/swift,kperryua/swift,hooman/swift,hughbe/swift,jckarter/swift,modocache/swift,glessard/swift,deyton/swift,allevato/swift,gmilos/swift,ben-ng/swift,gribozavr/swift,tkremenek/swift,CodaFi/swift,milseman/swift,nathawes/swift,return/swift,johnno1962d/swift,xedin/swift,stephentyrone/swift,russbishop/swift,rudkx/swift,amraboelela/swift,atrick/swift,IngmarStein/swift,CodaFi/swift,rudkx/swift,gmilos/swift,hughbe/swift,return/swift,shajrawi/swift,Jnosh/swift,xedin/swift,jtbandes/swift,tkremenek/swift,kstaring/swift,OscarSwanros/swift,aschwaighofer/swift,modocache/swift,bitjammer/swift,lorentey/swift,allevato/swift,xedin/swift,gottesmm/swift,gmilos/swift,xwu/swift,hughbe/swift,johnno1962d/swift,glessard/swift,karwa/swift,uasys/swift,swiftix/swift,JGiola/swift,aschwaighofer/swift,sschiau/swift,nathawes/swift,gottesmm/swift,tinysun212/swift-windows,nathawes/swift,devincoughlin/swift,milseman/swift,danielmartin/swift,Jnosh/swift,calebd/swift,zisko/swift,nathawes/swift,jopamer/swift,alblue/swift,return/swift,jopamer/swift,sschiau/swift,brentdax/swift,roambotics/swift,jtbandes/swift,apple/swift,brentdax/swift,benlangmuir/swift,tjw/swift,modocache/swift,bitjammer/swift,IngmarStein/swift,xwu/swift,tinysun212/swift-windows,djwbrown/swift,atrick/swift,gmilos/swift,kstaring/swift,benlangmuir/swift,gribozavr/swift,glessard/swift,allevato/swift,CodaFi/swift,calebd/swift,natecook1000/swift,harlanhaskins/swift,amraboelela/swift,natecook1000/swift,parkera/swift,karwa/swift,harlanhaskins/swift,aschwaighofer/swift,shahmishal/swift,zisko/swift,manavgabhawala/swift,hooman/swift,ahoppen/swift,practicalswift/swift,brentdax/swift,parkera/swift,djwbrown/swift,deyton/swift,airspeedswift/swift,CodaFi/swift,jopamer/swift,kperryua/swift,arvedviehweger/swift,benlangmuir/swift,jtbandes/swift,arvedviehweger/swift,kperryua/swift,ahoppen/swift,therealbnut/swift,harlanhaskins/swift,devincoughlin/swift,allevato/swift,JaSpa/swift,natecook1000/swift,tardieu/swift,ben-ng/swift,therealbnut/swift,ken0nek/swift,sschiau/swift,gottesmm/swift,swiftix/swift,gottesmm/swift,gribozavr/swift,felix91gr/swift,djwbrown/swift,felix91gr/swift,modocache/swift,kstaring/swift,manavgabhawala/swift,shahmishal/swift,glessard/swift,russbishop/swift,russbishop/swift,xwu/swift,JGiola/swift,amraboelela/swift,sschiau/swift,sschiau/swift,brentdax/swift,devincoughlin/swift,lorentey/swift,CodaFi/swift,lorentey/swift,austinzheng/swift,alblue/swift,tardieu/swift,Jnosh/swift,nathawes/swift,swiftix/swift,shahmishal/swift,benlangmuir/swift,uasys/swift,ahoppen/swift,alblue/swift,jopamer/swift,ken0nek/swift,huonw/swift,jtbandes/swift,roambotics/swift,devincoughlin/swift,austinzheng/swift,practicalswift/swift,gottesmm/swift,jmgc/swift,kperryua/swift,jopamer/swift,roambotics/swift,xwu/swift,calebd/swift,felix91gr/swift,shajrawi/swift,rudkx/swift,xedin/swift,russbishop/swift,ken0nek/swift,devincoughlin/swift,deyton/swift,xedin/swift,JaSpa/swift,bitjammer/swift,tinysun212/swift-windows,stephentyrone/swift,nathawes/swift,return/swift,ben-ng/swift,tardieu/swift,airspeedswift/swift,sschiau/swift,JaSpa/swift,natecook1000/swift,ken0nek/swift,karwa/swift,brentdax/swift,shajrawi/swift,shahmishal/swift,lorentey/swift,dreamsxin/swift,jmgc/swift,tjw/swift,manavgabhawala/swift,sschiau/swift,parkera/swift,apple/swift,shajrawi/swift,IngmarStein/swift,gribozavr/swift,arvedviehweger/swift,frootloops/swift,milseman/swift,austinzheng/swift