Support path_callback in Veritesting.
Support path_callback in Veritesting.

terry2012/angr,xurantju/angr,cureHsu/angr,angr/angr,GuardianRG/angr,chubbymaggie/angr,tyb0807/angr,haylesr/angr,axt/angr,lowks/angr,zhuyue1314/angr,fjferrer/angr,angr/angr,f-prettyland/angr,GuardianRG/angr,f-prettyland/angr,lowks/angr,xurantju/angr,cureHsu/angr,schieb/angr,avain/angr,zhuyue1314/angr,iamahuman/angr,mingderwang/angr,mingderwang/angr,iamahuman/angr,avain/angr,iamahuman/angr,axt/angr,fjferrer/angr,axt/angr,schieb/angr,schieb/angr,tyb0807/angr,f-prettyland/angr,terry2012/angr,chubbymaggie/angr,haylesr/angr,angr/angr,tyb0807/angr,chubbymaggie/angr