plugins: SendReply - handle memory allocation failures

Signed-off-by: Tim Blechmann <tim@klingt.org>
plugins: Poll - handle memory allocation failures & cleanup code

Signed-off-by: Tim Blechmann <tim@klingt.org>
plugins: SendPeakRMS - handle memory allocation failure

Signed-off-by: Tim Blechmann <tim@klingt.org>
plugins: PanAz - handle memory allocation failure

Signed-off-by: Tim Blechmann <tim@klingt.org>
plugins: Klang/Klank - handle memory allocation failures

Signed-off-by: Tim Blechmann <tim@klingt.org>
plugins: Demand/Dshuf/Dpoll - handle out of memory failures

Signed-off-by: Tim Blechmann <tim@klingt.org>
Tuning: add chinese shi er lu scale

Signed-off-by: Tim Blechmann <tim@klingt.org>