Fixed multiply defined symbols when linking statically with both PulseAudio and Alsa plugins enabled: The private classes In/OutputPrivate had identical names and have been renamed. Change-Id: I9415beeeed9fb0e14ead3f0ab906f343b3934341 Task-number: QTBUG-43514 Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>