function equals(actual, expected, message) {
	push(expected == actual, actual, expected, message);
}
Checks that the first two arguments are equal, with an optional message.
Prints out both actual and expected values.

Prefered to ok( actual == expected, message )

@example equals( $.format("Received {0} bytes.", 2), "Received 2 bytes." );

@param Object actual
@param Object expected
@param String message (optional)