Fix VarDecls for tuples. Closes #99. I've implemented it this way since it doesn't require any changes in the frontend. However, I think having TypeTuple expressed as LLVM struct types would make much more sense and open the door to tuple lvalues.

module scope4;
int main()
{
    int i;
    try
    {
        return i;
    }
    finally
    {
        //i = 1;
    }
}