WinSDK: prevent windows.h from hijacking imm.h
WinSDK: prevent windows.h from hijacking imm.h

Both `immdev.h` & `windows.h` include `imm.h`, and sometimes this header gets assigned to the module containing `windows.h` (currently `WinSDK.WinSock2`) instead of the Internationalization submodule

tkremenek/swift,atrick/swift,glessard/swift,roambotics/swift,tkremenek/swift,glessard/swift,parkera/swift,jmgc/swift,ahoppen/swift,hooman/swift,atrick/swift,jmgc/swift,ahoppen/swift,roambotics/swift,xwu/swift,ahoppen/swift,rudkx/swift,apple/swift,glessard/swift,hooman/swift,jmgc/swift,parkera/swift,apple/swift,JGiola/swift,apple/swift,gregomni/swift,jmgc/swift,atrick/swift,benlangmuir/swift,xwu/swift,rudkx/swift,jmgc/swift,JGiola/swift,ahoppen/swift,rudkx/swift,tkremenek/swift,hooman/swift,roambotics/swift,jmgc/swift,xwu/swift,benlangmuir/swift,JGiola/swift,atrick/swift,tkremenek/swift,benlangmuir/swift,parkera/swift,hooman/swift,apple/swift,benlangmuir/swift,JGiola/swift,xwu/swift,rudkx/swift,glessard/swift,gregomni/swift,tkremenek/swift,benlangmuir/swift,apple/swift,benlangmuir/swift,glessard/swift,gregomni/swift,JGiola/swift,gregomni/swift,xwu/swift,hooman/swift,hooman/swift,gregomni/swift,roambotics/swift,hooman/swift,rudkx/swift,xwu/swift,parkera/swift,parkera/swift,JGiola/swift,gregomni/swift,glessard/swift,atrick/swift,ahoppen/swift,rudkx/swift,ahoppen/swift,roambotics/swift,parkera/swift,tkremenek/swift,parkera/swift,atrick/swift,xwu/swift,apple/swift,roambotics/swift,tkremenek/swift,jmgc/swift,parkera/swift