Log Message:
Update to 0.234

Upstream changes:
0.234 20150527
    . Fix the test for PMC loading to work on versions on Perl that don't
      have Config::non_bincompat_options (HAARG). Fixes RT#102626 .

0.233 20150525
    ! The diagnostic about inheriting from ourselves was removed.
      It served no own purpose as Perl already warns if we try to
      inherit in a circular way.