Reflection: add PE/COFF magic checking for inspection
Reflection: add PE/COFF magic checking for inspection

When we inspect a binary, verify that it is a PE/COFF binary before
trying to interpret it as a PE/COFF binary.  This prepares the code
for extraction of the file inspection and will permit cross-platform
builds to introspect foreign binaries.

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