[svn r354] Fix the regressions between [346] and [353] by making constructors and destructors outside classes fatal errors. Fix tests makefile and add minimize to gc.d.

module aa2;

void main()
{
    long[float] aa;
    long* p = 2.0f in aa;
    assert(!p);
    aa[4f] = 23;
    p = 4f in aa;
    assert(p);
    assert(*p == 23);
}