Remove some redundancy from the DValue hierarchy: all subclasses had a 'type' field and identical implementations of virtual function getType(). Move these to DValue itself, and make getType() non-virtual.

module moduleinfo1;

static this()
{
}

static this()
{
}

static ~this()
{
}

static ~this()
{
}

unittest
{
}

class C
{
}

class D : C
{
}

void main()
{
}