Update tgmath.swift.gyb to work with Glibc and MSVCRT.
Update tgmath.swift.gyb to work with Glibc and MSVCRT.

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