shims: adjust dispatch shim for LLP64
shims: adjust dispatch shim for LLP64

Adjust the block type to use `intptr_t` which is a register-wide integral type.
This allows the same declaration to be portable across LP64 and LLP64
environents.

ahoppen/swift,gribozavr/swift,nathawes/swift,lorentey/swift,parkera/swift,roambotics/swift,airspeedswift/swift,jmgc/swift,glessard/swift,jckarter/swift,alblue/swift,shahmishal/swift,devincoughlin/swift,devincoughlin/swift,karwa/swift,shajrawi/swift,devincoughlin/swift,xedin/swift,hooman/swift,parkera/swift,roambotics/swift,allevato/swift,airspeedswift/swift,practicalswift/swift,xedin/swift,jmgc/swift,austinzheng/swift,amraboelela/swift,JGiola/swift,airspeedswift/swift,roambotics/swift,tkremenek/swift,JGiola/swift,sschiau/swift,gribozavr/swift,allevato/swift,apple/swift,practicalswift/swift,apple/swift,xwu/swift,karwa/swift,atrick/swift,harlanhaskins/swift,shahmishal/swift,airspeedswift/swift,stephentyrone/swift,allevato/swift,jckarter/swift,rudkx/swift,tkremenek/swift,harlanhaskins/swift,benlangmuir/swift,parkera/swift,shajrawi/swift,lorentey/swift,karwa/swift,stephentyrone/swift,hooman/swift,rudkx/swift,gribozavr/swift,JGiola/swift,danielmartin/swift,atrick/swift,amraboelela/swift,nathawes/swift,shajrawi/swift,benlangmuir/swift,danielmartin/swift,lorentey/swift,gregomni/swift,shahmishal/swift,tkremenek/swift,ahoppen/swift,xwu/swift,sschiau/swift,practicalswift/swift,stephentyrone/swift,hooman/swift,harlanhaskins/swift,aschwaighofer/swift,gribozavr/swift,amraboelela/swift,alblue/swift,hooman/swift,alblue/swift,sschiau/swift,shahmishal/swift,lorentey/swift,jmgc/swift,harlanhaskins/swift,harlanhaskins/swift,lorentey/swift,xedin/swift,hooman/swift,airspeedswift/swift,jckarter/swift,practicalswift/swift,gregomni/swift,shahmishal/swift,jckarter/swift,xedin/swift,atrick/swift,xwu/swift,nathawes/swift,shajrawi/swift,benlangmuir/swift,harlanhaskins/swift,xedin/swift,airspeedswift/swift,gribozavr/swift,amraboelela/swift,gribozavr/swift,JGiola/swift,devincoughlin/swift,aschwaighofer/swift,austinzheng/swift,aschwaighofer/swift,devincoughlin/swift,austinzheng/swift,CodaFi/swift,practicalswift/swift,parkera/swift,jmgc/swift,rudkx/swift,xwu/swift,parkera/swift,roambotics/swift,ahoppen/swift,tkremenek/swift,xedin/swift,jckarter/swift,tkremenek/swift,austinzheng/swift,gregomni/swift,karwa/swift,danielmartin/swift,atrick/swift,karwa/swift,allevato/swift,aschwaighofer/swift,amraboelela/swift,gregomni/swift,lorentey/swift,stephentyrone/swift,lorentey/swift,rudkx/swift,gregomni/swift,danielmartin/swift,gribozavr/swift,allevato/swift,practicalswift/swift,karwa/swift,CodaFi/swift,shajrawi/swift,JGiola/swift,sschiau/swift,nathawes/swift,parkera/swift,jmgc/swift,xwu/swift,lorentey/swift,shajrawi/swift,glessard/swift,jckarter/swift,danielmartin/swift,shahmishal/swift,karwa/swift,practicalswift/swift,ahoppen/swift,xedin/swift,nathawes/swift,glessard/swift,allevato/swift,jmgc/swift,sschiau/swift,xwu/swift,sschiau/swift,shajrawi/swift,amraboelela/swift,tkremenek/swift,apple/swift,atrick/swift,xwu/swift,rudkx/swift,parkera/swift,hooman/swift,atrick/swift,benlangmuir/swift,apple/swift,glessard/swift,hooman/swift,harlanhaskins/swift,aschwaighofer/swift,stephentyrone/swift,austinzheng/swift,karwa/swift,roambotics/swift,CodaFi/swift,gregomni/swift,shahmishal/swift,danielmartin/swift,sschiau/swift,alblue/swift,devincoughlin/swift,apple/swift,gribozavr/swift,shajrawi/swift,apple/swift,devincoughlin/swift,shahmishal/swift,alblue/swift,xedin/swift,parkera/swift,jmgc/swift,devincoughlin/swift,allevato/swift,CodaFi/swift,stephentyrone/swift,practicalswift/swift,aschwaighofer/swift,danielmartin/swift,benlangmuir/swift,austinzheng/swift,benlangmuir/swift,austinzheng/swift,roambotics/swift,glessard/swift,sschiau/swift,rudkx/swift,CodaFi/swift,amraboelela/swift,tkremenek/swift,nathawes/swift,jckarter/swift,alblue/swift,ahoppen/swift,nathawes/swift,alblue/swift,CodaFi/swift,glessard/swift,JGiola/swift,CodaFi/swift,airspeedswift/swift,aschwaighofer/swift,ahoppen/swift,stephentyrone/swift