Log Message:
Update to 2.79

Upstream changes:
2.79 Tue Apr 30 21:22:05 2013
    - allow import arguments to be passed as a hashref
      - add t/import_hashref.t
    - doc tweaks

2.78 Tue Apr 30 18:53:54 2013
    - fix RT #80400 (thanks, Tokuhiro Matsuno)
      - added t/rt_80400.t

2.77  Thu Dec 13 19:59:48 2012
    - doc tweaks
    - add multiple-arg autoref tests

2.76  Wed Nov 21 14:35:33 2012
    - fix breaking tests in perl >= 5.17.5: update error message pattern \ 
(thanks, rjbs)
    - update ppport.h from 3.19 to 3.20