30.04.2018 * Additions and fixes for realtime operation: (Tim E. Real of MusE) - Added realtime operation to Pulse driver. - Fixed ALSA realtime support. Attributes are once again all set in probeDeviceOpen(). - Fixed OSS realtime support. Same mods as done to ALSA driver. OSS untested, but should work, it's the same code. - A diagnostic message (streamed to cerr) in each of the callback handlers informs the user if realtime is really running.