Update to 0.42

Upstream changes:
0.42      2016-05-31 12:40:10-04:00 America/New_York

  - No changes from 0.41

0.41      2016-05-23 11:58:15-04:00 America/New_York (TRIAL RELEASE)

  [Fixed]

  - Fixed some failing tests when STDIN is routed to /dev/null

0.40      2016-05-23 11:42:35-04:00 America/New_York

  - No changes from 0.39

0.39      2016-05-02 10:21:48-04:00 America/New_York (TRIAL RELEASE)

  [Fixed]

  - Fix in 0.37 tickled a very obscure regular expressions bug in perl <
    5.18; should now be fixed.

0.37      2016-05-02 07:08:31-04:00 America/New_York (TRIAL RELEASE)

  [Fixed]

  - Skip some tests if locale can't be determined.

(wen)