WinSDK: extract WinRPC into a module
WinSDK: extract WinRPC into a module

Add a module representing RpcRT4.  This is needed for interfacing with
certain COM interfaces.

stephentyrone/swift,allevato/swift,airspeedswift/swift,apple/swift,nathawes/swift,parkera/swift,xwu/swift,glessard/swift,parkera/swift,jckarter/swift,stephentyrone/swift,aschwaighofer/swift,roambotics/swift,atrick/swift,hooman/swift,glessard/swift,rudkx/swift,apple/swift,airspeedswift/swift,apple/swift,apple/swift,benlangmuir/swift,gregomni/swift,nathawes/swift,atrick/swift,tkremenek/swift,stephentyrone/swift,jckarter/swift,harlanhaskins/swift,ahoppen/swift,tkremenek/swift,aschwaighofer/swift,xwu/swift,JGiola/swift,allevato/swift,stephentyrone/swift,CodaFi/swift,tkremenek/swift,gregomni/swift,ahoppen/swift,hooman/swift,airspeedswift/swift,nathawes/swift,aschwaighofer/swift,aschwaighofer/swift,parkera/swift,aschwaighofer/swift,parkera/swift,jmgc/swift,airspeedswift/swift,stephentyrone/swift,benlangmuir/swift,nathawes/swift,jckarter/swift,glessard/swift,CodaFi/swift,jmgc/swift,rudkx/swift,roambotics/swift,atrick/swift,tkremenek/swift,jckarter/swift,xwu/swift,allevato/swift,stephentyrone/swift,allevato/swift,jmgc/swift,tkremenek/swift,roambotics/swift,parkera/swift,harlanhaskins/swift,hooman/swift,jmgc/swift,gregomni/swift,rudkx/swift,gregomni/swift,harlanhaskins/swift,allevato/swift,hooman/swift,airspeedswift/swift,jckarter/swift,ahoppen/swift,allevato/swift,tkremenek/swift,harlanhaskins/swift,atrick/swift,glessard/swift,jmgc/swift,roambotics/swift,jckarter/swift,airspeedswift/swift,rudkx/swift,aschwaighofer/swift,atrick/swift,gregomni/swift,nathawes/swift,parkera/swift,CodaFi/swift,glessard/swift,parkera/swift,JGiola/swift,roambotics/swift,xwu/swift,jmgc/swift,roambotics/swift,xwu/swift,CodaFi/swift,hooman/swift,hooman/swift,harlanhaskins/swift,JGiola/swift,aschwaighofer/swift,ahoppen/swift,benlangmuir/swift,CodaFi/swift,apple/swift,hooman/swift,benlangmuir/swift,harlanhaskins/swift,apple/swift,atrick/swift,jmgc/swift,JGiola/swift,nathawes/swift,tkremenek/swift,parkera/swift,gregomni/swift,rudkx/swift,harlanhaskins/swift,benlangmuir/swift,glessard/swift,jckarter/swift,xwu/swift,allevato/swift,JGiola/swift,airspeedswift/swift,ahoppen/swift,xwu/swift,nathawes/swift,rudkx/swift,CodaFi/swift,benlangmuir/swift,CodaFi/swift,stephentyrone/swift,JGiola/swift,ahoppen/swift