Fixed Issue MAGN4944

Issue: http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-4944
Addded 1 in-port to nodes from DSVarArgFunction
@Steell  Please review it. Thanks
Right, but say we had a function with a signature Foo(int aParam, int anotherParam, params string[] strings), then we'd see the VarArg parameters start with "string2", which would not be correct.