modify vxworks signature to avoid false positives
modify vxworks signature to avoid false positives

pyq881120/binwalk,MaiPhuoc/binwalk,naterh/binwalk,chubbymaggie/binwalk,goofwear/binwalk,jiangbing9293/binwalk,UniqMartin/binwalk,emprovements/binwalk,thx0701/binwalk,anthraxx/binwalk,sviehb/binwalk,zhuyue1314/binwalk,UniqMartin/binwalk,foreni-packages/binwalk,gale320/binwalk,Eih3/binwalk,pombredanne/binwalk,WooyunDota/binwalk,Eih3/binwalk,goofwear/binwalk,sundhaug92/binwalk,naterh/binwalk,emprovements/binwalk,geekspeed/binwalk,peterdocter/binwalk,thx0701/binwalk,cappiewu/binwalk,WooyunDota/binwalk,zhuyue1314/binwalk,cristianst85/binwalk,cappiewu/binwalk,anthraxx/binwalk,hyper-xx/binwalk,foreni-packages/binwalk,cristianst85/binwalk,sundhaug92/binwalk,hyper-xx/binwalk,Flameeyes/binwalk,pyq881120/binwalk,AmesianX/binwalk,sviehb/binwalk,pombredanne/binwalk,geekspeed/binwalk,devttys0/binwalk,draekko/binwalk,ddcc/binwalk,devttys0/binwalk,draekko/binwalk,gale320/binwalk,AmesianX/binwalk,itsens/binwalk,foreni-packages/binwalk,MaiPhuoc/binwalk,peterdocter/binwalk,itsens/binwalk,jiangbing9293/binwalk,ddcc/binwalk,chubbymaggie/binwalk,Flameeyes/binwalk