[NFC][not.py] Making escaping of argv more consistent. Addressing PR #23578.
[NFC][not.py] Making escaping of argv more consistent. Addressing PR #23578.

In https://github.com/apple/swift/pull/23578, @jrose-apple gave some
comments on correctness of argument concatenation in regards to not.py.
The PR merged before I was able to address those changes.

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