rem: _IMPEXP_BE bigtime_t idle_time()
add: idle_time()
context: _IMPEXP_BE bigtime_t idle_time(){	PortLink::ReplyData replydata;	bigtime_t idletime;		BPrivate::BAppServerLink *link=new BPrivate::BAppServerLink();	link->SetOpCode(AS_IDLE_TIME);	link->FlushWithReply(&replydata);		idletime=*((bigtime_t*)replydata.buffer);		delete link;	return idletime;}