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 moduleinfo1;

static this()
{
}

static this()
{
}

static ~this()
{
}

static ~this()
{
}

unittest
{
}

class C
{
}

class D : C
{
}

void main()
{
}