Switch TypePointer::isunsigned from false to true, so CmpExp::toElem chooses the right operand for pointer comparisons. Fixes run/t/typeinfo_03_A,B,C,D.

// ireal

module typeinfo1.ti_ireal;

private import typeinfo1.ti_real;

class TypeInfo_j : TypeInfo_e
{
    char[] toString() { return "ireal"; }
}