[svn r111] Fixed most problems with complex number support and added typeinfo for them. Added typeinfo ti_C. Did some changes to the way expressions that have both lvalue and rvalue LLVM values are handled.

module bug7;

class love { }
void bug() {
    love[] child;
    child.length=1;
    assert(child[0] is null);
    child[0]=null;
    assert(child[0] is null);
}
void main()
{
    bug();
}