stdlib: make CommandLine inspection work
stdlib: make CommandLine inspection work

This implements commandline access on Windows by using the Windows Shell
API to access the commandline information and making it available in
Swift.  This is needed for the correct invocation of the child process
in the unit tests.

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