Pickle iropt_level in cfgaccurate; closes #1058
Pickle iropt_level in cfgaccurate; closes #1058

tyb0807/angr,iamahuman/angr,tyb0807/angr,schieb/angr,angr/angr,iamahuman/angr,tyb0807/angr,iamahuman/angr,schieb/angr,schieb/angr,angr/angr,angr/angr