sclang: testsuite fix

Signed-off-by: Tim Blechmann <tim@klingt.org>
supernova: dsp thread queue - testsuite compile fix

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

Signed-off-by: Tim Blechmann <tim@klingt.org>
supernova: node graph - fix synth count handling in group_free_deep

Signed-off-by: Tim Blechmann <tim@klingt.org>
Issue #702 fix: sendSelection receives NSString

  - MyDocument and SCCocoaTextViewResponder sendSelection methods
    now share same signature.

  - Implemented method calls updated to use NSString.