Fixed the endianness bug in SimMemory.store_cases().
Fixed the endianness bug in SimMemory.store_cases().

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