Merge branch 't/alsa_fix'

	3a56a6 alsa: Do not buffer more than 500ms.

Seems to work fine everywhere.

diff --cc NEWS
index df54a6412db9ef55d4b580cbf7328b72f4a6e07f,0ac2240effe91e4294c8ec901fe18f9c143e42d3..23ec23a3840dc17b511da7b9bd904bc62ca7f68a
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -2,11 -2,8 +2,12 @@@
  0.4.11 (to be announced) "mutual diversity"
  -------------------------------------------
  
 +      - Sideband connections: If both para_server and para_client
 +        support this feature, data is sent as a multiplexed stream.
        - The --no_default_filters option of para_filter has been
          removed.
 +      - Several fixes and latency improvements to various decoders.
++      - The alsa writer now limits the prebuffer time to 500ms.
        - Documentation improvements.
  
  ------------------------------------------