Commented some logging that could be '''very''' long, cuts -vv output size of a gtkd gl sample down 1.2GB by 3/4. Fixed wrong pointer type for multidimension "deep" slicing.

module nested3;

void main()
{
    int i;
    void test()
    {
        i = 3;
    }
    test();
    assert(i == 3);
}