Merge branch 't/autogen'

diff --cc NEWS
index 3443ebb3d5362afd5a72d1ba8d415d6c193217c9,e8f847b9cba942f6baa90195aafc20c0111d3985..c08197f522011aaceb409c542ad1ca6e75a160d0
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -3,7 -3,6 +3,9 @@@
  -------------------------------------------
  
        - configure: improved options for ogg/vorbis/speex.
 +      - The git version reported by --version always matches HEAD.
++      - The autogen script detects the number of processors and
++        runs a parallel make if possible.
  
  ------------------------------------------
  0.4.6 (2011-03-31) "deterministic entropy"