SCOTLaND'S businesses would adjust comfortably if the country eventually voted for independence, the head of a prominent lobby group is set to tell members this week.  Simon Walker, who took over as director general of the Institute of Directors this month, is also set to use a conference in St andrews to call for the UK government to go further with its controversial austerity programme.  Speaking to Scotland on Sunday ahead of Friday's meeting, Walker said he was relaxed about the possibility of Scotland becoming independent.  He cited the example of lower corporate taxes in Ireland that could be replicated in Scotland to the advantage of the business community.  "It's for the people of Scotland to decide," Walker said. "If they want independence, I'm sure business will adjust. If it leads to the sort of tax competition that has made Ireland such a ma