Change IDA indicator.
Returns the previous status.
long set_ida_state(long status);
#define IDA_STATUS_READY 0 // READY IDA is idle
#define IDA_STATUS_THINKING 1 // THINKING Analyzing but the user may press keys
#define IDA_STATUS_WAITING 2 // WAITING Waiting for the user input
#define IDA_STATUS_WORK 3 // BUSY IDA is busy