ALSA JACK plugin snd_pcm_drain() support#1

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twischer-adit wants to merge 5 commits intomasterfrom

adit_devel_SOPL_5833_alsa_jack_plugin_implement_draining

Commits on Feb 24, 2018

jack: Use boundary as hw_ptr wrap around

Timo Wischer
authored and
tiwai
committed

Commits on Feb 26, 2018

jack: Do not Xrun the ALSA buffer
Timo Wischer
committed
jack: Use internal snd_pcm_state to reduce amount of additional variables
Timo Wischer
committed
jack: Report Xruns to user application
Timo Wischer
committed
jack: Support snd_pcm_drain()
Timo Wischer
committed