The usual decorum for interviews is that of subtlety—and for good reason. The fact that you're looking for other work is one that you'd probably prefer your employer wasn't aware of. Their gut reaction could very well be to fire you and secure the future of their business and the security of their company. Now, jobless, the job you were applying for now has much higher bargaining power over you than they held previously. For this reason, it's usually an unspoken rule that an interviewer As an a…