QString::toInt() should support the 0b prefix

Not certain whether this is a bug or intended but I noticed that when converting Hex/Octal/Binary strings to their int values I can convert hex using as either "0x64" or "64", Octal using either "0144" or "144", but Binary only using "1100100". If I use "0b1100100" I get a failure.

QString t = "0b1100100";

bool ok = false;

int i;

// t = t.mid(2);
i = t.toInt(&ok, 2);

gives i == 0 and ok == false. With the t=t.mid(2) to strip the Ob off if gives the correct value of 100 (decimal) and ok == true.