f5fc224af3
Previously, isc_job_run() could have been used to run the job on the current loop and the isc_job_run() would take care of allocating and deallocating the job. After the change in this MR, the isc_job_run() is more complicated to use, so we introduce the isc_async_current() macro to suplement isc_async_run() when we need to run the job on the current loop.