[test] accept any size for signature of .cxx methods in objc_subclasses
[test] accept any size for signature of .cxx methods in objc_subclasses

The size of the signature for .cxx_construct and .cxx_destruct varies
with the bitness of the target (the signature on 32-bit platforms is one
character shorter than on 64-bit targets), and IRGen/objc_subclass.swift
is the only ObjC test with .cxx_{construct,destruct} methods that runs
on both.

karwa/swift,lorentey/swift,benlangmuir/swift,CodaFi/swift,austinzheng/swift,brentdax/swift,gribozavr/swift,danielmartin/swift,nathawes/swift,shajrawi/swift,rudkx/swift,danielmartin/swift,allevato/swift,CodaFi/swift,lorentey/swift,glessard/swift,devincoughlin/swift,airspeedswift/swift,brentdax/swift,jopamer/swift,devincoughlin/swift,lorentey/swift,ahoppen/swift,shajrawi/swift,brentdax/swift,devincoughlin/swift,sschiau/swift,natecook1000/swift,hooman/swift,alblue/swift,harlanhaskins/swift,austinzheng/swift,sschiau/swift,nathawes/swift,austinzheng/swift,amraboelela/swift,shahmishal/swift,benlangmuir/swift,xwu/swift,CodaFi/swift,airspeedswift/swift,jopamer/swift,hooman/swift,rudkx/swift,alblue/swift,rudkx/swift,shajrawi/swift,karwa/swift,atrick/swift,gregomni/swift,jmgc/swift,jopamer/swift,amraboelela/swift,ahoppen/swift,brentdax/swift,aschwaighofer/swift,parkera/swift,jmgc/swift,practicalswift/swift,tkremenek/swift,jopamer/swift,airspeedswift/swift,stephentyrone/swift,natecook1000/swift,danielmartin/swift,karwa/swift,JGiola/swift,danielmartin/swift,aschwaighofer/swift,roambotics/swift,atrick/swift,aschwaighofer/swift,roambotics/swift,apple/swift,practicalswift/swift,practicalswift/swift,rudkx/swift,allevato/swift,nathawes/swift,lorentey/swift,austinzheng/swift,shahmishal/swift,parkera/swift,shahmishal/swift,apple/swift,xwu/swift,parkera/swift,jckarter/swift,xedin/swift,karwa/swift,allevato/swift,harlanhaskins/swift,tkremenek/swift,xwu/swift,sschiau/swift,sschiau/swift,jmgc/swift,benlangmuir/swift,natecook1000/swift,CodaFi/swift,xedin/swift,karwa/swift,shajrawi/swift,aschwaighofer/swift,stephentyrone/swift,danielmartin/swift,amraboelela/swift,devincoughlin/swift,shajrawi/swift,parkera/swift,ahoppen/swift,rudkx/swift,lorentey/swift,atrick/swift,airspeedswift/swift,jmgc/swift,harlanhaskins/swift,benlangmuir/swift,nathawes/swift,allevato/swift,CodaFi/swift,jmgc/swift,xedin/swift,parkera/swift,jopamer/swift,sschiau/swift,xedin/swift,JGiola/swift,jopamer/swift,jckarter/swift,allevato/swift,karwa/swift,xwu/swift,ahoppen/swift,xedin/swift,shajrawi/swift,airspeedswift/swift,JGiola/swift,xwu/swift,glessard/swift,parkera/swift,sschiau/swift,stephentyrone/swift,apple/swift,alblue/swift,apple/swift,hooman/swift,shahmishal/swift,nathawes/swift,jmgc/swift,natecook1000/swift,natecook1000/swift,harlanhaskins/swift,tkremenek/swift,alblue/swift,xedin/swift,devincoughlin/swift,gregomni/swift,shajrawi/swift,aschwaighofer/swift,shahmishal/swift,apple/swift,shahmishal/swift,ahoppen/swift,aschwaighofer/swift,natecook1000/swift,austinzheng/swift,natecook1000/swift,ahoppen/swift,lorentey/swift,xwu/swift,airspeedswift/swift,practicalswift/swift,allevato/swift,hooman/swift,aschwaighofer/swift,amraboelela/swift,JGiola/swift,gribozavr/swift,brentdax/swift,harlanhaskins/swift,devincoughlin/swift,nathawes/swift,devincoughlin/swift,danielmartin/swift,gribozavr/swift,glessard/swift,xedin/swift,alblue/swift,roambotics/swift,brentdax/swift,practicalswift/swift,JGiola/swift,gregomni/swift,jckarter/swift,shahmishal/swift,tkremenek/swift,gribozavr/swift,CodaFi/swift,roambotics/swift,tkremenek/swift,benlangmuir/swift,xedin/swift,hooman/swift,allevato/swift,jckarter/swift,sschiau/swift,practicalswift/swift,roambotics/swift,gribozavr/swift,practicalswift/swift,lorentey/swift,stephentyrone/swift,apple/swift,atrick/swift,xwu/swift,brentdax/swift,gribozavr/swift,jopamer/swift,devincoughlin/swift,hooman/swift,harlanhaskins/swift,karwa/swift,austinzheng/swift,roambotics/swift,stephentyrone/swift,danielmartin/swift,hooman/swift,glessard/swift,nathawes/swift,jckarter/swift,karwa/swift,jmgc/swift,parkera/swift,shahmishal/swift,alblue/swift,atrick/swift,tkremenek/swift,parkera/swift,lorentey/swift,gregomni/swift,austinzheng/swift,gregomni/swift,harlanhaskins/swift,amraboelela/swift,airspeedswift/swift,CodaFi/swift,atrick/swift,shajrawi/swift,jckarter/swift,gregomni/swift,glessard/swift,sschiau/swift,rudkx/swift,practicalswift/swift,JGiola/swift,tkremenek/swift,stephentyrone/swift,amraboelela/swift,stephentyrone/swift,gribozavr/swift,benlangmuir/swift,amraboelela/swift,jckarter/swift,gribozavr/swift,glessard/swift,alblue/swift