Removed the 'needsstorage' thing from Dsymbol. Arguments are not always given storage when applicable. This is not longer treat specially in this regard. Code for accessing nested variables and contexts rewritten. Probably more. Fairly well tested.

// this head contains stuff used by all the IR

#ifndef LLVMDC_IR_IR_H
#define LLVMDC_IR_IR_H

#include "ir/irforw.h"
#include "root.h"

struct IrBase : Object
{
    virtual ~IrBase() {}
};

#endif