6702956: OpenJDK: replace encumbered code (software synthesizer) 6717691: Update Gervill with post 1.0 fixes 6740210: Update Gervill with more post 1.0 fixes 6748247: Further update Gervill with still more post 1.0 fixes 6748251: Apply IcedTea midi sound patch 6758986: Gervill: Turn SoftJitterCorrector, SoftAudioPusher threads into a daemon threads Reviewed-by: ohair, darcy