Log Message:
Update to 0.047

Upstream changes:
0.047     2013-11-26 15:11:13 America/New_York
    [FIXED]
    - Previous lock testing fixes broke on Windows (sigh); now fixed,
      I hope.
0.046     2013-11-22 17:07:24 America/New_York
    [FIXED]
    - Revised locking tests for portability again: locks are now tested
      from a separate process
0.045     2013-11-22 15:28:50 America/New_York
    [FIXED]
    - Fixed locking test on AIX