Log Message:
Update to 0.81

Upstream changes:
0.81 Sat 11 May 2019 12:46:41 PM CEST
 - test - Adjust excpected number of lines in log to Inline-0.82_001 (PR#89
   @ppisar++)
 - Fix pod document link (PR#68 PR#90 @manwar++)
 - Fix docs to work with strict mode (use Inline 'C'; instead of use Inline
   C;) (PR#70 @akarelas-pt++)
 - Add test, and Cookbook example, of array-ref arg (PR#39 @mohawk2++)

0.80 Thu 18 Apr 2019 10:42:30 AM CEST
 - Apply PR#71 (ETJ++) Support perl 5.8.1 again
 - Apply PR#74 and PR#76 (WBRASWELL++) Fix Include Dir Behavior, replace -I
   with -iquote or -I- respectively
 - Apply PR#77 (WBRASWELL++) Fix Include Dir Behavior, Non-GCC Compilers
 - More fixes for include dir behaviour (@sisyphus++)