omitNeedlessWords: separate BaseName in trailing type name matching
omitNeedlessWords: separate BaseName in trailing type name matching

Method base names are where the most complicated logic is, so let's
split it out from the other cases a bit. Also makes early returns more
explicit.

No intended functionality change.

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