make things derive from SimError
make things derive from SimError

angr/angr,f-prettyland/angr,tyb0807/angr,f-prettyland/angr,schieb/angr,angr/simuvex,axt/angr,angr/angr,schieb/angr,chubbymaggie/simuvex,iamahuman/angr,chubbymaggie/angr,axt/angr,zhuyue1314/simuvex,iamahuman/angr,f-prettyland/angr,chubbymaggie/angr,schieb/angr,angr/angr,tyb0807/angr,axt/angr,chubbymaggie/simuvex,chubbymaggie/simuvex,chubbymaggie/angr,tyb0807/angr,iamahuman/angr