Fixed some windows build issues
Fixed some windows build issues

krishauser/Klampt,bbgw/Klampt,YilunZhou/Klampt,bbgw/Klampt,krishauser/Klampt,hpbader42/Klampt,hpbader42/Klampt,bbgw/Klampt,stevekuznetsov/Klampt,krishauser/Klampt,YilunZhou/Klampt,hpbader42/Klampt,krishauser/Klampt,stevekuznetsov/Klampt,stevekuznetsov/Klampt,YilunZhou/Klampt,krishauser/Klampt,stevekuznetsov/Klampt,hpbader42/Klampt,arocchi/Klampt,arocchi/Klampt,YilunZhou/Klampt,arocchi/Klampt,arocchi/Klampt,krishauser/Klampt,hpbader42/Klampt,bbgw/Klampt